diff --git a/tests/test_input.c b/tests/test_input.c
index 58ae894..67ffafe 100644
--- a/tests/test_input.c
+++ b/tests/test_input.c
@@ -25,6 +25,7 @@
  *
  * Basic input injector for sngrep testing
  */
+#include "config.h"
 
 #include <unistd.h>
 #include <stdio.h>