diff --git a/Parser/parsetok.c b/Parser/parsetok.c
index 11d2232..2b1255f 100644
--- a/Parser/parsetok.c
+++ b/Parser/parsetok.c
@@ -108,6 +108,7 @@
 	if ((ps = PyParser_New(g, start)) == NULL) {
 		fprintf(stderr, "no mem for new parser\n");
 		err_ret->error = E_NOMEM;
+		PyTokenizer_Free(tok);
 		return NULL;
 	}
 #if 0 /* future keyword */