diff --git a/jerry-core/ecma/operations/ecma-function-object.c b/jerry-core/ecma/operations/ecma-function-object.c
index 6aa1936cc..f9071c332 100644
--- a/jerry-core/ecma/operations/ecma-function-object.c
+++ b/jerry-core/ecma/operations/ecma-function-object.c
@@ -666,7 +666,7 @@ ecma_op_function_call (ecma_object_t *func_obj_p, /**< Function object */
       const ecma_compiled_code_t *bytecode_data_p = ecma_op_function_get_compiled_code (ext_func_p);
 
 #ifndef CONFIG_DISABLE_ES2015_CLASS
-      bool is_class_constructor = (bool) (bytecode_data_p->status_flags & CBC_CODE_FLAGS_CONSTRUCTOR);
+      bool is_class_constructor = (bytecode_data_p->status_flags & CBC_CODE_FLAGS_CONSTRUCTOR) != 0;
 
       if (is_class_constructor && !ecma_op_function_has_construct_flag (arguments_list_p))
       {
@@ -674,8 +674,8 @@ ecma_op_function_call (ecma_object_t *func_obj_p, /**< Function object */
       }
 #endif /* !CONFIG_DISABLE_ES2015_CLASS */
 
-      bool is_strict = (bool) (bytecode_data_p->status_flags & CBC_CODE_FLAGS_STRICT_MODE);
-      bool is_no_lex_env = (bool) (bytecode_data_p->status_flags & CBC_CODE_FLAGS_LEXICAL_ENV_NOT_NEEDED);
+      bool is_strict = (bytecode_data_p->status_flags & CBC_CODE_FLAGS_STRICT_MODE) != 0;
+      bool is_no_lex_env = (bytecode_data_p->status_flags & CBC_CODE_FLAGS_LEXICAL_ENV_NOT_NEEDED) != 0;
 
       /* 1. */
       if (!is_strict)
@@ -775,7 +775,7 @@ ecma_op_function_call (ecma_object_t *func_obj_p, /**< Function object */
 
       const ecma_compiled_code_t *bytecode_data_p = ecma_op_arrow_function_get_compiled_code (arrow_func_p);
 
-      is_no_lex_env = (bool) (bytecode_data_p->status_flags & CBC_CODE_FLAGS_LEXICAL_ENV_NOT_NEEDED);
+      is_no_lex_env = (bytecode_data_p->status_flags & CBC_CODE_FLAGS_LEXICAL_ENV_NOT_NEEDED) != 0;
 
       ecma_object_t *local_env_p = scope_p;
 
diff --git a/jerry-core/parser/js/js-lexer.c b/jerry-core/parser/js/js-lexer.c
index 755b476fa..a9c11ae63 100644
--- a/jerry-core/parser/js/js-lexer.c
+++ b/jerry-core/parser/js/js-lexer.c
@@ -2194,7 +2194,7 @@ lexer_construct_regexp_object (parser_context_t *context_p, /**< context */
                                           current_flags);
   ecma_deref_ecma_string (pattern_str_p);
 
-  bool is_throw = (bool) ECMA_IS_VALUE_ERROR (completion_value);
+  bool is_throw = ECMA_IS_VALUE_ERROR (completion_value) != 0;
 
   ecma_free_value (completion_value);
 
diff --git a/jerry-core/parser/js/js-parser-expr.c b/jerry-core/parser/js/js-parser-expr.c
index 83f76fe91..1d8de008c 100644
--- a/jerry-core/parser/js/js-parser-expr.c
+++ b/jerry-core/parser/js/js-parser-expr.c
@@ -418,7 +418,7 @@ parser_parse_class_literal (parser_context_t *context_p) /**< context */
       JERRY_ASSERT (context_p->last_cbc_opcode == CBC_PUSH_LITERAL);
 
       cbc_ext_opcode_t opcode;
-      bool is_static = (bool) (status_flags & PARSER_CLASS_STATIC_FUNCTION);
+      bool is_static = (status_flags & PARSER_CLASS_STATIC_FUNCTION) != 0;
 
       if (is_computed)
       {
@@ -1366,7 +1366,7 @@ parser_parse_unary_expression (parser_context_t *context_p, /**< context */
           break;
         }
 
-        bool is_static = (bool) (context_p->status_flags & PARSER_CLASS_STATIC_FUNCTION);
+        bool is_static = (context_p->status_flags & PARSER_CLASS_STATIC_FUNCTION) != 0;
         parser_emit_cbc_ext (context_p, is_static ? CBC_EXT_PUSH_STATIC_SUPER : CBC_EXT_PUSH_SUPER);
         break;
       }