diff --git a/jerry-core/ecma/base/ecma-globals.h b/jerry-core/ecma/base/ecma-globals.h
index b1fb87d3a..da3016f17 100644
--- a/jerry-core/ecma/base/ecma-globals.h
+++ b/jerry-core/ecma/base/ecma-globals.h
@@ -533,7 +533,7 @@ typedef enum
  * Description of ECMA-object or lexical environment
  * (depending on is_lexical_environment).
  */
-typedef struct ecma_object_t
+typedef struct
 {
   /** type : 3 bit : ecma_object_type_t or ecma_lexical_environment_type_t
                      depending on ECMA_OBJECT_FLAG_BUILT_IN_OR_LEXICAL_ENV
@@ -891,7 +891,7 @@ typedef enum
 /**
  * ECMA string-value descriptor
  */
-typedef struct ecma_string_t
+typedef struct
 {
   /** Reference counter for the string */
   uint16_t refs_and_container;
diff --git a/jerry-core/jmem/jmem-allocator.h b/jerry-core/jmem/jmem-allocator.h
index 4b8a04869..19272b111 100644
--- a/jerry-core/jmem/jmem-allocator.h
+++ b/jerry-core/jmem/jmem-allocator.h
@@ -103,9 +103,9 @@ typedef struct
 /**
  * Node for free chunk list
  */
-typedef struct mem_pools_chunk
+typedef struct jmem_pools_chunk_t
 {
-  struct mem_pools_chunk *next_p; /* pointer to next pool chunk */
+  struct jmem_pools_chunk_t *next_p; /* pointer to next pool chunk */
 } jmem_pools_chunk_t;
 
 /**