diff --git a/jerry-core/ecma/operations/ecma-array-object.c b/jerry-core/ecma/operations/ecma-array-object.c
index 6d1bb5136..b3a17879e 100644
--- a/jerry-core/ecma/operations/ecma-array-object.c
+++ b/jerry-core/ecma/operations/ecma-array-object.c
@@ -66,9 +66,10 @@ ecma_op_create_array_object (const ecma_value_t *arguments_list_p, /**< list of
   {
     ecma_number_t num = ecma_get_number_from_value (arguments_list_p[0]);
     uint32_t num_uint32 = ecma_number_to_uint32 (num);
+
     if (num != ((ecma_number_t) num_uint32))
     {
-      return ecma_raise_range_error (ECMA_ERR_MSG (""));
+      return ecma_raise_range_error (ECMA_ERR_MSG ("Invalid array length."));
     }
     else
     {
@@ -211,7 +212,7 @@ ecma_op_array_object_define_own_property (ecma_object_t *obj_p, /**< the array o
 
     if (((ecma_number_t) new_len_uint32) != new_len_num)
     {
-      return ecma_raise_range_error (ECMA_ERR_MSG (""));
+      return ecma_raise_range_error (ECMA_ERR_MSG ("Invalid array length."));
     }
     else
     {
diff --git a/jerry-core/ecma/operations/ecma-conversion.c b/jerry-core/ecma/operations/ecma-conversion.c
index 72abebab1..5e458f311 100644
--- a/jerry-core/ecma/operations/ecma-conversion.c
+++ b/jerry-core/ecma/operations/ecma-conversion.c
@@ -57,7 +57,7 @@ ecma_op_check_object_coercible (ecma_value_t value) /**< ecma value */
   if (ecma_is_value_undefined (value)
       || ecma_is_value_null (value))
   {
-    return ecma_raise_type_error (ECMA_ERR_MSG (""));
+    return ecma_raise_type_error (ECMA_ERR_MSG ("Argument cannot be converted to an object."));
   }
   else
   {
@@ -413,7 +413,7 @@ ecma_op_to_object (ecma_value_t value) /**< ecma value */
     if (ecma_is_value_undefined (value)
         || ecma_is_value_null (value))
     {
-      return ecma_raise_type_error (ECMA_ERR_MSG (""));
+      return ecma_raise_type_error (ECMA_ERR_MSG ("Argument cannot be converted to an object."));
     }
     else
     {
@@ -570,7 +570,7 @@ ecma_op_to_property_descriptor (ecma_value_t obj_value, /**< object value */
   // 1.
   if (!ecma_is_value_object (obj_value))
   {
-    ret_value = ecma_raise_type_error (ECMA_ERR_MSG (""));
+    ret_value = ecma_raise_type_error (ECMA_ERR_MSG ("Expected an object."));
   }
   else
   {
@@ -678,7 +678,7 @@ ecma_op_to_property_descriptor (ecma_value_t obj_value, /**< object value */
         if (!ecma_op_is_callable (get_prop_value)
             && !ecma_is_value_undefined (get_prop_value))
         {
-          ret_value = ecma_raise_type_error (ECMA_ERR_MSG (""));
+          ret_value = ecma_raise_type_error (ECMA_ERR_MSG ("Expected a function."));
         }
         else
         {
@@ -722,7 +722,7 @@ ecma_op_to_property_descriptor (ecma_value_t obj_value, /**< object value */
         if (!ecma_op_is_callable (set_prop_value)
             && !ecma_is_value_undefined (set_prop_value))
         {
-          ret_value = ecma_raise_type_error (ECMA_ERR_MSG (""));
+          ret_value = ecma_raise_type_error (ECMA_ERR_MSG ("Expected a function."));
         }
         else
         {
@@ -760,7 +760,7 @@ ecma_op_to_property_descriptor (ecma_value_t obj_value, /**< object value */
         if (prop_desc.is_value_defined
             || prop_desc.is_writable_defined)
         {
-          ret_value = ecma_raise_type_error (ECMA_ERR_MSG (""));
+          ret_value = ecma_raise_type_error (ECMA_ERR_MSG ("Accessors cannot be writable."));
         }
       }
     }
diff --git a/jerry-core/ecma/operations/ecma-function-object.c b/jerry-core/ecma/operations/ecma-function-object.c
index fd16eb165..bdd0d2fbc 100644
--- a/jerry-core/ecma/operations/ecma-function-object.c
+++ b/jerry-core/ecma/operations/ecma-function-object.c
@@ -406,7 +406,7 @@ ecma_op_function_has_instance (ecma_object_t *func_obj_p, /**< Function object *
     if (ecma_get_object_is_builtin (func_obj_p)
         && ecma_builtin_function_is_routine (func_obj_p))
     {
-      return ecma_raise_type_error (ECMA_ERR_MSG (""));
+      return ecma_raise_type_error (ECMA_ERR_MSG ("Function parameter cannot be built-in a function."));
     }
 
     if (!ecma_is_value_object (value))
@@ -424,7 +424,7 @@ ecma_op_function_has_instance (ecma_object_t *func_obj_p, /**< Function object *
 
     if (!ecma_is_value_object (prototype_obj_value))
     {
-      ret_value = ecma_raise_type_error (ECMA_ERR_MSG (""));
+      ret_value = ecma_raise_type_error (ECMA_ERR_MSG ("Expected an object."));
     }
     else
     {
@@ -456,7 +456,7 @@ ecma_op_function_has_instance (ecma_object_t *func_obj_p, /**< Function object *
   }
   else if (ecma_get_object_type (func_obj_p) == ECMA_OBJECT_TYPE_EXTERNAL_FUNCTION)
   {
-    ret_value = ecma_raise_type_error (ECMA_ERR_MSG (""));
+    ret_value = ecma_raise_type_error (ECMA_ERR_MSG ("Expected a function."));
   }
   else
   {
@@ -789,7 +789,7 @@ ecma_op_function_construct (ecma_object_t *func_obj_p, /**< Function object */
     /* 2. */
     if (!ecma_is_constructor (ecma_make_object_value (target_func_obj_p)))
     {
-      ret_value = ecma_raise_type_error (ECMA_ERR_MSG (""));
+      ret_value = ecma_raise_type_error (ECMA_ERR_MSG ("Expected a constructor."));
     }
     else
     {
diff --git a/jerry-core/ecma/operations/ecma-get-put-value.c b/jerry-core/ecma/operations/ecma-get-put-value.c
index 6bdc170c5..21fb438b6 100644
--- a/jerry-core/ecma/operations/ecma-get-put-value.c
+++ b/jerry-core/ecma/operations/ecma-get-put-value.c
@@ -53,7 +53,7 @@ ecma_op_get_value_lex_env_base (ecma_object_t *ref_base_lex_env_p, /**< referenc
   // 3.
   if (unlikely (is_unresolvable_reference))
   {
-    return ecma_raise_reference_error (ECMA_ERR_MSG (""));
+    return ecma_raise_reference_error (ECMA_ERR_MSG ("Cannot resolve reference."));
   }
 
   // 5.
@@ -150,7 +150,7 @@ ecma_op_put_value_lex_env_base (ecma_object_t *ref_base_lex_env_p, /**< referenc
     // 3.a.
     if (is_strict)
     {
-      return ecma_raise_reference_error (ECMA_ERR_MSG (""));
+      return ecma_raise_reference_error (ECMA_ERR_MSG ("Cannot resolve reference."));
     }
     else
     {
diff --git a/jerry-core/ecma/operations/ecma-lex-env.c b/jerry-core/ecma/operations/ecma-lex-env.c
index 7489dd748..ae7cb36b0 100644
--- a/jerry-core/ecma/operations/ecma-lex-env.c
+++ b/jerry-core/ecma/operations/ecma-lex-env.c
@@ -199,7 +199,7 @@ ecma_op_set_mutable_binding (ecma_object_t *lex_env_p, /**< lexical environment
     }
     else if (is_strict)
     {
-      return ecma_raise_type_error (ECMA_ERR_MSG (""));
+      return ecma_raise_type_error (ECMA_ERR_MSG ("Binding cannot be set."));
     }
   }
   else
@@ -263,7 +263,7 @@ ecma_op_get_binding_value (ecma_object_t *lex_env_p, /**< lexical environment */
     {
       if (is_strict)
       {
-        result = ecma_raise_reference_error (ECMA_ERR_MSG (""));
+        result = ecma_raise_reference_error (ECMA_ERR_MSG ("Binding does not exist or is uninitialised."));
       }
       else
       {
diff --git a/jerry-core/ecma/operations/ecma-objects-general.c b/jerry-core/ecma/operations/ecma-objects-general.c
index 07ef6a417..b8e3c2773 100644
--- a/jerry-core/ecma/operations/ecma-objects-general.c
+++ b/jerry-core/ecma/operations/ecma-objects-general.c
@@ -42,7 +42,7 @@ ecma_reject (bool is_throw) /**< Throw flag */
 {
   if (is_throw)
   {
-    return ecma_raise_type_error (ECMA_ERR_MSG (""));
+    return ecma_raise_type_error (ECMA_ERR_MSG ("Invalid argument type."));
   }
   else
   {
@@ -173,7 +173,7 @@ ecma_op_general_object_delete (ecma_object_t *obj_p, /**< the object */
   else if (is_throw)
   {
     // 4.
-    return ecma_raise_type_error (ECMA_ERR_MSG (""));
+    return ecma_raise_type_error (ECMA_ERR_MSG ("Expected a configurable property."));
   }
   else
   {
@@ -262,7 +262,7 @@ ecma_op_general_object_default_value (ecma_object_t *obj_p, /**< the object */
     ecma_free_value (call_completion);
   }
 
-  return ecma_raise_type_error (ECMA_ERR_MSG (""));
+  return ecma_raise_type_error (ECMA_ERR_MSG ("Invalid argument type in [[DefaultValue]]."));
 } /* ecma_op_general_object_default_value */
 
 /**
diff --git a/jerry-core/ecma/operations/ecma-objects.c b/jerry-core/ecma/operations/ecma-objects.c
index 7f6ac60f5..b94021afe 100644
--- a/jerry-core/ecma/operations/ecma-objects.c
+++ b/jerry-core/ecma/operations/ecma-objects.c
@@ -1007,7 +1007,7 @@ ecma_op_object_has_instance (ecma_object_t *obj_p, /**< the object */
     case ECMA_OBJECT_TYPE_STRING:
     case ECMA_OBJECT_TYPE_ARGUMENTS:
     {
-      return ecma_raise_type_error (ECMA_ERR_MSG (""));
+      return ecma_raise_type_error (ECMA_ERR_MSG ("Expected a function object."));
     }
 
     case ECMA_OBJECT_TYPE_FUNCTION:
diff --git a/jerry-core/ecma/operations/ecma-reference.c b/jerry-core/ecma/operations/ecma-reference.c
index 8af64984d..55929925e 100644
--- a/jerry-core/ecma/operations/ecma-reference.c
+++ b/jerry-core/ecma/operations/ecma-reference.c
@@ -99,7 +99,7 @@ ecma_op_resolve_reference_value (ecma_object_t *lex_env_p, /**< starting lexical
     lex_env_p = ecma_get_lex_env_outer_reference (lex_env_p);
   }
 
-  return ecma_raise_reference_error (ECMA_ERR_MSG (""));
+  return ecma_raise_reference_error (ECMA_ERR_MSG ("Cannot resolve reference."));
 } /* ecma_op_resolve_reference_value */
 
 /**
diff --git a/jerry-core/ecma/operations/ecma-regexp-object.c b/jerry-core/ecma/operations/ecma-regexp-object.c
index db7f4572b..0ef78f16e 100644
--- a/jerry-core/ecma/operations/ecma-regexp-object.c
+++ b/jerry-core/ecma/operations/ecma-regexp-object.c
@@ -1150,7 +1150,7 @@ re_match_regexp (re_matcher_ctx_t *re_ctx_p, /**< RegExp matcher context */
       default:
       {
         JERRY_TRACE_MSG ("UNKNOWN opcode (%u)!\n", (unsigned int) op);
-        return ecma_raise_common_error (ECMA_ERR_MSG (""));
+        return ecma_raise_common_error (ECMA_ERR_MSG ("Unknown RegExp opcode."));
       }
     }
   }