diff --git a/jerry-core/config.h b/jerry-core/config.h
index e4c085d811..8b6060cddc 100644
--- a/jerry-core/config.h
+++ b/jerry-core/config.h
@@ -34,11 +34,6 @@
  */
 #define CONFIG_MEM_POOL_CHUNK_SIZE (8)
 
-/**
- * Size of heap chunk
- */
-#define CONFIG_MEM_HEAP_CHUNK_SIZE (64)
-
 /**
  * Size of heap
  */
diff --git a/jerry-core/jrt/jrt.h b/jerry-core/jrt/jrt.h
index d8985e1124..b222df353b 100644
--- a/jerry-core/jrt/jrt.h
+++ b/jerry-core/jrt/jrt.h
@@ -199,13 +199,6 @@ extern void __noreturn jerry_fatal (jerry_fatal_code_t);
  * Alignment
  */
 
-/**
- * Aligns @a value to @a alignment.
- *
- * Returns maximum positive value, that divides @a alignment and is less than or equal to @a value
- */
-#define JERRY_ALIGNDOWN(value, alignment) ((alignment) * ((value) / (alignment)))
-
 /**
  * Aligns @a value to @a alignment.
  *
diff --git a/jerry-core/mem/mem-config.h b/jerry-core/mem/mem-config.h
index 5844eea795..84ed65379a 100644
--- a/jerry-core/mem/mem-config.h
+++ b/jerry-core/mem/mem-config.h
@@ -28,11 +28,6 @@
  */
 #define MEM_HEAP_SIZE ((size_t) (CONFIG_MEM_HEAP_AREA_SIZE))
 
-/**
- * Size of heap chunk
- */
-#define MEM_HEAP_CHUNK_SIZE ((size_t) (CONFIG_MEM_HEAP_CHUNK_SIZE))
-
 /**
  * Size of pool chunk
  */
diff --git a/jerry-core/mem/mem-heap.c b/jerry-core/mem/mem-heap.c
index daf828ae03..a522b2926f 100644
--- a/jerry-core/mem/mem-heap.c
+++ b/jerry-core/mem/mem-heap.c
@@ -90,12 +90,6 @@ void mem_heap_valgrind_freya_mempool_request (void)
 # define VALGRIND_FREYA_FREELIKE_SPACE(p)
 #endif /* JERRY_VALGRIND_FREYA */
 
-/**
- * Chunk size should satisfy the required alignment value
- */
-JERRY_STATIC_ASSERT (MEM_HEAP_CHUNK_SIZE % MEM_ALIGNMENT == 0,
-                     MEM_HEAP_CHUNK_SIZE_must_be_multiple_of_MEM_ALIGNMENT);
-
 /* Calculate heap area size, leaving space for a pointer to the free list */
 #define MEM_HEAP_AREA_SIZE (MEM_HEAP_SIZE - MEM_ALIGNMENT)
 #define MEM_HEAP_END_OF_LIST ((mem_heap_free_t *const) ~((uint32_t) 0x0))
@@ -551,17 +545,6 @@ mem_heap_free_block_size_stored (void *ptr) /**< pointer to the memory block */
   mem_heap_free_block (original_p, original_p->size);
 } /* mem_heap_free_block_size_stored */
 
-/**
- * Recommend allocation size based on chunk size.
- *
- * @return recommended allocation size
- */
-size_t __attr_pure___
-mem_heap_recommend_allocation_size (size_t minimum_allocation_size) /**< minimum allocation size */
-{
-  return JERRY_ALIGNUP (minimum_allocation_size, MEM_HEAP_CHUNK_SIZE);
-} /* mem_heap_recommend_allocation_size */
-
 /**
  * Compress pointer
  *
diff --git a/jerry-core/mem/mem-heap.h b/jerry-core/mem/mem-heap.h
index 49c3f12245..fc1bd150b7 100644
--- a/jerry-core/mem/mem-heap.h
+++ b/jerry-core/mem/mem-heap.h
@@ -39,7 +39,6 @@ extern void mem_heap_free_block_size_stored (void *);
 extern uintptr_t mem_heap_compress_pointer (const void *);
 extern void *mem_heap_decompress_pointer (uintptr_t);
 extern bool mem_is_heap_pointer (const void *);
-extern size_t __attr_pure___ mem_heap_recommend_allocation_size (size_t);
 extern void mem_heap_print ();
 
 #ifdef MEM_STATS