diff --git a/Zend/zend_alloc.c b/Zend/zend_alloc.c
index 7e4e36a370d..c9ecc741110 100644
--- a/Zend/zend_alloc.c
+++ b/Zend/zend_alloc.c
@@ -162,7 +162,7 @@ static zend_mm_segment* zend_mm_mem_mmap_realloc(zend_mm_storage *storage, zend_
 
 static void zend_mm_mem_mmap_free(zend_mm_storage *storage, zend_mm_segment* segment)
 {
-	munmap(segment, segment->size);
+	munmap((void*)segment, segment->size);
 }
 
 #endif