diff --git a/tests/check_parser.c b/tests/check_parser.c
index c66978f..d8975a0 100644
--- a/tests/check_parser.c
+++ b/tests/check_parser.c
@@ -10,6 +10,7 @@
 */
 
 #include <stdlib.h>
+#include <string.h>
 
 #include <check.h>