diff --git a/services/inputflinger/UnwantedInteractionBlocker.h b/services/inputflinger/UnwantedInteractionBlocker.h
index 8ff9658..1878849 100644
--- a/services/inputflinger/UnwantedInteractionBlocker.h
+++ b/services/inputflinger/UnwantedInteractionBlocker.h
@@ -147,7 +147,7 @@
     std::vector<NotifyMotionArgs> processMotion(const NotifyMotionArgs& args);
 
     // Get the device info of this device, for comparison purposes
-    const AndroidPalmFilterDeviceInfo& getPalmFilterDeviceInfo();
+    const AndroidPalmFilterDeviceInfo& getPalmFilterDeviceInfo() const;
     std::string dump() const;
 
 private: