diff --git a/include/input/InputDevice.h b/include/input/InputDevice.h
index 1a48239..6a248ef 100644
--- a/include/input/InputDevice.h
+++ b/include/input/InputDevice.h
@@ -266,6 +266,7 @@
 public:
     InputDeviceInfo();
     InputDeviceInfo(const InputDeviceInfo& other);
+    InputDeviceInfo& operator=(const InputDeviceInfo& other);
     ~InputDeviceInfo();
 
     struct MotionRange {
@@ -315,13 +316,11 @@
 
     inline const InputDeviceViewBehavior& getViewBehavior() const { return mViewBehavior; }
 
-    inline void setKeyCharacterMap(const std::shared_ptr<KeyCharacterMap> value) {
-        mKeyCharacterMap = value;
+    inline void setKeyCharacterMap(std::unique_ptr<KeyCharacterMap> value) {
+        mKeyCharacterMap = std::move(value);
     }
 
-    inline const std::shared_ptr<KeyCharacterMap> getKeyCharacterMap() const {
-        return mKeyCharacterMap;
-    }
+    inline const KeyCharacterMap* getKeyCharacterMap() const { return mKeyCharacterMap.get(); }
 
     inline void setVibrator(bool hasVibrator) { mHasVibrator = hasVibrator; }
     inline bool hasVibrator() const { return mHasVibrator; }
@@ -364,7 +363,7 @@
     std::optional<KeyboardLayoutInfo> mKeyboardLayoutInfo;
     uint32_t mSources;
     int32_t mKeyboardType;
-    std::shared_ptr<KeyCharacterMap> mKeyCharacterMap;
+    std::unique_ptr<KeyCharacterMap> mKeyCharacterMap;
     std::optional<InputDeviceUsiVersion> mUsiVersion;
     ui::LogicalDisplayId mAssociatedDisplayId{ui::LogicalDisplayId::INVALID};
     bool mEnabled;
diff --git a/include/input/KeyCharacterMap.h b/include/input/KeyCharacterMap.h
index 7ea34c2..0a9e74f 100644
--- a/include/input/KeyCharacterMap.h
+++ b/include/input/KeyCharacterMap.h
@@ -72,7 +72,7 @@
     };
 
     /* Loads a key character map from a file. */
-    static base::Result<std::shared_ptr<KeyCharacterMap>> load(const std::string& filename,
+    static base::Result<std::unique_ptr<KeyCharacterMap>> load(const std::string& filename,
                                                                Format format);
 
     /* Loads a key character map from its string contents. */