diff --git a/mongoose.c b/mongoose.c
index eab88d93..d004a16d 100644
--- a/mongoose.c
+++ b/mongoose.c
@@ -5865,7 +5865,7 @@ static void mg_http_free_proto_data_endpoints(struct mg_http_endpoint **ep) {
     current = tmp;
   }
 
-  ep = NULL;
+  *ep = NULL;
 }
 
 static void mg_http_free_reverse_proxy_data(struct mg_reverse_proxy_data *rpd) {
diff --git a/src/mg_http.c b/src/mg_http.c
index 7f780247..70f13dc1 100644
--- a/src/mg_http.c
+++ b/src/mg_http.c
@@ -236,7 +236,7 @@ static void mg_http_free_proto_data_endpoints(struct mg_http_endpoint **ep) {
     current = tmp;
   }
 
-  ep = NULL;
+  *ep = NULL;
 }
 
 static void mg_http_free_reverse_proxy_data(struct mg_reverse_proxy_data *rpd) {