conformance_tests BUGFIX add proper header for WEXITSTATUS
diff --git a/tests/conformance/test_sec7_1.c b/tests/conformance/test_sec7_1.c
index b066007..1a4b52c 100644
--- a/tests/conformance/test_sec7_1.c
+++ b/tests/conformance/test_sec7_1.c
@@ -19,6 +19,7 @@
 #include <unistd.h>
 #include <cmocka.h>
 #include <string.h>
+#include <sys/wait.h>
 
 #include "../config.h"
 #include "../../src/libyang.h"