diff --git a/src/bumpptr_alloc.c b/src/bumpptr_alloc.c
index 9bd34a686191948a48b5b667f5c07e3b1b18bb03..26908092caccd039c765de5056d64418f3a31556 100644
--- a/src/bumpptr_alloc.c
+++ b/src/bumpptr_alloc.c
@@ -32,7 +32,7 @@ void* malloc(size_t size) {
 	return ret;
 }
 
-void free(void* ptr) {
+void free(__attribute__ ((unused)) void* ptr) {
 }
 
 void* realloc(void* ptr, size_t size) {