diff --git a/services/inputflinger/tests/RotaryEncoderInputMapper_test.cpp b/services/inputflinger/tests/RotaryEncoderInputMapper_test.cpp
index 486d893..157bee3 100644
--- a/services/inputflinger/tests/RotaryEncoderInputMapper_test.cpp
+++ b/services/inputflinger/tests/RotaryEncoderInputMapper_test.cpp
@@ -103,7 +103,7 @@
                 .WillRepeatedly(Return(false));
     }
 
-    std::map<const char*, int64_t> mTelemetryLogCounts;
+    std::map<std::string, int64_t> mTelemetryLogCounts;
 
     /**
      * A fake function for telemetry logging.