diff --git a/confluent_vtbufferd/Makefile b/confluent_vtbufferd/Makefile
index aec2906c..7205052b 100644
--- a/confluent_vtbufferd/Makefile
+++ b/confluent_vtbufferd/Makefile
@@ -1,5 +1,5 @@
 vtbufferd: vtbufferd.c tmt.c
-	gcc -O3 -o vtbufferd vtbufferd.c tmt.c
+	gcc -O3 --std=gnu11 -o vtbufferd vtbufferd.c tmt.c
 
 clean:
 	rm vtbufferd