diff --git a/tools/test-runner.c b/tools/test-runner.c
index 91983a55..d4a05ac3 100644
--- a/tools/test-runner.c
+++ b/tools/test-runner.c
@@ -1313,7 +1313,7 @@ start_next_test:
 	if (!py_test)
 		return;
 
-	argv[0] = "python";
+	argv[0] = "python3";
 	argv[1] = py_test;
 	argv[2] = NULL;