diff --git a/Lib/test/test_imp.py b/Lib/test/test_imp.py
index 3a3059e1619..1e04f5ad0c1 100644
--- a/Lib/test/test_imp.py
+++ b/Lib/test/test_imp.py
@@ -85,10 +85,16 @@ def test_reload(self):
 
 
 def test_main():
-    support.run_unittest(
-                LockTests,
-                ImportTests,
-            )
+    tests = [
+        ImportTests,
+    ]
+    try:
+        import _thread
+    except ImportError:
+        pass
+    else:
+        tests.append(LockTests)
+    support.run_unittest(*tests)
 
 if __name__ == "__main__":
     test_main()