diff --git a/src/libstrongswan/tests/suites/test_fetch_http.c b/src/libstrongswan/tests/suites/test_fetch_http.c
index 42743c7872..9f1eef2f37 100644
--- a/src/libstrongswan/tests/suites/test_fetch_http.c
+++ b/src/libstrongswan/tests/suites/test_fetch_http.c
@@ -281,7 +281,7 @@ START_TEST(test_response_code)
 {
 	stream_service_t *service;
 	status_t status;
-	chunk_t data;
+	chunk_t data = chunk_empty;
 	char uri[256];
 	u_int code;