diff --git a/test/testautomation_platform.c b/test/testautomation_platform.c
index dcb379b87..0e1ddd1c5 100644
--- a/test/testautomation_platform.c
+++ b/test/testautomation_platform.c
@@ -369,7 +369,7 @@ static int platform_testSetErrorEmptyInput(void *arg)
 static int platform_testSetErrorInvalidInput(void *arg)
 {
     int result;
-    const char *invalidError = NULL;
+    const char *invalidError = "";
     const char *probeError = "Testing";
     const char *lastError;
     size_t len;