diff --git a/mingw-w64-libraries/winpthreads/tests/test.c b/mingw-w64-libraries/winpthreads/tests/test.c
index 95c61fd..06e8456 100644
--- a/mingw-w64-libraries/winpthreads/tests/test.c
+++ b/mingw-w64-libraries/winpthreads/tests/test.c
@@ -504,7 +504,7 @@
                     f++;
                     printf("_pthread_tryjoin failed: %d %d %d\n",i, rc,thread[i]->tid);
                 } else {
-                    thread[i] = NULL;
+                    thread[i] = 0;
                     printf("_pthread_tryjoin OK: %d\n",i);
                 }
             }