diff --git a/ext/puma_http11/puma_http11.c b/ext/puma_http11/puma_http11.c
index 5ca5456c..60db25e7 100644
--- a/ext/puma_http11/puma_http11.c
+++ b/ext/puma_http11/puma_http11.c
@@ -268,7 +268,7 @@ void HttpParser_free(void *data) {
   TRACE();
 
   if(data) {
-    free(data);
+    xfree(data);
   }
 }