diff --git a/src/utils/os_none.c b/src/utils/os_none.c
index 26491115a..83fe02516 100644
--- a/src/utils/os_none.c
+++ b/src/utils/os_none.c
@@ -234,3 +234,9 @@ int os_snprintf(char *str, size_t size, const char *format, ...)
 	return 0;
 }
 #endif /* OS_NO_C_LIB_DEFINES */
+
+
+int os_exec(const char *program, const char *arg, int wait_completion)
+{
+	return -1;
+}