diff --git a/test/testautomation_video.c b/test/testautomation_video.c
index cfc4a238e..7b86cfba9 100644
--- a/test/testautomation_video.c
+++ b/test/testautomation_video.c
@@ -1522,10 +1522,10 @@ video_getSetWindowData(void *arg)
   const char *referenceName2 = "TestName2";
   const char *name2 = "TestName2";
   int datasize;
-  char *referenceUserdata;
-  char *userdata;
-  char *referenceUserdata2;
-  char *userdata2;
+  char *referenceUserdata = NULL;
+  char *userdata = NULL;
+  char *referenceUserdata2 = NULL;
+  char *userdata2 = NULL;
   char *result;
   int iteration;