diff --git a/src/core/mem/allocator/mem_allocator.c b/src/core/mem/allocator/mem_allocator.c
index d5a5ea8..365d033 100644
--- a/src/core/mem/allocator/mem_allocator.c
+++ b/src/core/mem/allocator/mem_allocator.c
@@ -34,10 +34,10 @@ void *wapp_mem_allocator_realloc_aligned(const Allocator *allocator, void *ptr,
   return allocator->realloc_aligned(ptr, old_size, new_size, alignment, allocator->obj);
 }
 
-void wapp_mem_allocator_free(const Allocator *allocator, void **ptr) {
+void wapp_mem_allocator_free(const Allocator *allocator, void **ptr, u64 size) {
   if (!allocator || !(allocator->free)) {
     return;
   }
 
-  allocator->free(ptr, allocator->obj);
+  allocator->free(ptr, size, allocator->obj);
 }
diff --git a/src/core/mem/allocator/mem_allocator.h b/src/core/mem/allocator/mem_allocator.h
index acbaf6e..0821771 100644
--- a/src/core/mem/allocator/mem_allocator.h
+++ b/src/core/mem/allocator/mem_allocator.h
@@ -12,7 +12,7 @@ typedef void *(MemAllocFunc)(u64 size, void *alloc_obj);
 typedef void *(MemAllocAlignedFunc)(u64 size, u64 alignment, void *alloc_obj);
 typedef void *(MemReallocFunc)(void *ptr, u64 old_size, u64 new_size, void *alloc_obj);
 typedef void *(MemReallocAlignedFunc)(void *ptr, u64 old_size, u64 new_size, u64 alignment, void *alloc_obj);
-typedef void(MemFreeFunc)(void **ptr, void *alloc_obj);
+typedef void  (MemFreeFunc)(void **ptr, u64 size, void *alloc_obj);
 
 
 typedef struct allocator Allocator;
@@ -33,7 +33,7 @@ void *wapp_mem_allocator_alloc_aligned(const Allocator *allocator, u64 size, u64
 void *wapp_mem_allocator_realloc(const Allocator *allocator, void *ptr, u64 old_size, u64 new_size);
 void *wapp_mem_allocator_realloc_aligned(const Allocator *allocator, void *ptr, u64 old_size,
                                          u64 new_size, u64 alignment);
-void wapp_mem_allocator_free(const Allocator *allocator, void **ptr);
+void wapp_mem_allocator_free(const Allocator *allocator, void **ptr, u64 size);
 
 #ifdef __cplusplus
 END_C_LINKAGE