diff --git a/py/malloc.c b/py/malloc.c
index 8775f68..2f8b5f7 100644
--- a/py/malloc.c
+++ b/py/malloc.c
@@ -51,6 +51,6 @@
     return ptr;
 }
 
-int m_get_total_bytes_allocated() {
+int m_get_total_bytes_allocated(void) {
     return total_bytes_allocated;
 }