diff --git a/services/inputflinger/tests/InputReader_test.cpp b/services/inputflinger/tests/InputReader_test.cpp
index 4b00ee4..a974d09 100644
--- a/services/inputflinger/tests/InputReader_test.cpp
+++ b/services/inputflinger/tests/InputReader_test.cpp
@@ -2310,6 +2310,7 @@
         T& mapper = mDevice->addMapper<T>(EVENTHUB_ID, args...);
         configureDevice(0);
         mDevice->reset(ARBITRARY_TIME);
+        mapper.reset(ARBITRARY_TIME);
         return mapper;
     }