diff --git a/src/gc/alloc_memory.c b/src/gc/alloc_memory.c
index 908e5d3..b63e393 100644
--- a/src/gc/alloc_memory.c
+++ b/src/gc/alloc_memory.c
@@ -56,8 +56,10 @@ mem_sys_allocate(size_t size)
 #ifdef DETAIL_MEMORY_DEBUG
     fprintf(stderr, "Allocated %i at %p\n", size, ptr);
 #endif
-    if (!ptr && size)
+    if (!ptr && size) {
+        free(ptr);
         PANIC_OUT_OF_MEM(size);
+    }
     return ptr;
 }
 
@@ -83,8 +85,10 @@ mem_sys_allocate_zeroed(size_t size)
 #ifdef DETAIL_MEMORY_DEBUG
     fprintf(stderr, "Allocated %i at %p\n", size, ptr);
 #endif
-    if (!ptr && size)
+    if (!ptr && size) {
+        free(ptr);
         PANIC_OUT_OF_MEM(size);
+    }
     return ptr;
 }
 
@@ -118,8 +122,10 @@ mem_sys_realloc(ARGFREE(void *from), size_t size)
 #ifdef DETAIL_MEMORY_DEBUG
     fprintf(stderr, "Allocated %i at %p\n", size, ptr);
 #endif
-    if (!ptr && size)
+    if (!ptr && size) {
+        free(ptr);
         PANIC_OUT_OF_MEM(size);
+    }
     return ptr;
 }
 
@@ -151,8 +157,10 @@ mem_sys_realloc_zeroed(ARGFREE(void *from), size_t size, size_t old_size)
 #ifdef DETAIL_MEMORY_DEBUG
     fprintf(stderr, "Allocated %i at %p\n", size, ptr);
 #endif
-    if (!ptr && size)
+    if (!ptr && size) {
+        free(ptr);
         PANIC_OUT_OF_MEM(size);
+    }
 
     if (size > old_size)
         memset((char*)ptr + old_size, 0, size - old_size);