diff --git a/src/blackinput/keyboard.h b/src/blackinput/keyboard.h
index 9284acfc2..bdd3606a6 100644
--- a/src/blackinput/keyboard.h
+++ b/src/blackinput/keyboard.h
@@ -57,7 +57,7 @@ namespace BlackInput
          * \param key
          * \param isPressed
          */
-        virtual void triggerKey(const BlackMisc::Hardware::CKeyboardKey key, bool isPressed) = 0;
+        virtual void triggerKey(const BlackMisc::Hardware::CKeyboardKey &key, bool isPressed) = 0;
 
         //! Creates a native keyboard handler object
         static IKeyboard *getInstance();
diff --git a/src/blackinput/linux/keyboard_linux.cpp b/src/blackinput/linux/keyboard_linux.cpp
index 6999c4a59..eaf5abd14 100644
--- a/src/blackinput/linux/keyboard_linux.cpp
+++ b/src/blackinput/linux/keyboard_linux.cpp
@@ -50,6 +50,7 @@ namespace BlackInput
         m_pressedKey.setKeyObject(CKeyboardKey());
     }
 
+    void CKeyboardLinux::triggerKey(const CKeyboardKey &key, bool isPressed)
     {
         if(!isPressed) emit keyUp(key);
         else emit keyDown(key);
diff --git a/src/blackinput/linux/keyboard_linux.h b/src/blackinput/linux/keyboard_linux.h
index 0ec5ead86..5128e2249 100644
--- a/src/blackinput/linux/keyboard_linux.h
+++ b/src/blackinput/linux/keyboard_linux.h
@@ -36,7 +36,7 @@ namespace BlackInput
         virtual void startCapture(bool ignoreNextKey = false) override;
 
         //! \copydoc IKeyboard::triggerKey()
-        virtual void triggerKey(const BlackMisc::Hardware::CKeyboardKey key, bool isPressed) override;
+        virtual void triggerKey(const BlackMisc::Hardware::CKeyboardKey &key, bool isPressed) override;
 
     protected:
 
diff --git a/src/blackinput/osx/keyboard_mac.cpp b/src/blackinput/osx/keyboard_mac.cpp
index 3be18dd58..2851aa43d 100644
--- a/src/blackinput/osx/keyboard_mac.cpp
+++ b/src/blackinput/osx/keyboard_mac.cpp
@@ -37,6 +37,7 @@ namespace BlackInput
         m_pressedKey.setKeyObject(CKeyboardKey());
     }
 
+    void CKeyboardMac::triggerKey(const CKeyboardKey &key, bool isPressed)
     {
         if(!isPressed) emit keyUp(key);
         else emit keyDown(key);
diff --git a/src/blackinput/osx/keyboard_mac.h b/src/blackinput/osx/keyboard_mac.h
index c389d7ab6..31be87341 100644
--- a/src/blackinput/osx/keyboard_mac.h
+++ b/src/blackinput/osx/keyboard_mac.h
@@ -33,7 +33,7 @@ namespace BlackInput
         virtual void startCapture(bool ignoreNextKey = false) override;
 
         //! \copydoc IKeyboard::triggerKey()
-        virtual void triggerKey(const BlackMisc::Hardware::CKeyboardKey key, bool isPressed) override;
+        virtual void triggerKey(const BlackMisc::Hardware::CKeyboardKey &key, bool isPressed) override;
 
     protected:
 
diff --git a/src/blackinput/win/keyboard_windows.cpp b/src/blackinput/win/keyboard_windows.cpp
index 77bfe5585..acf09cbd3 100644
--- a/src/blackinput/win/keyboard_windows.cpp
+++ b/src/blackinput/win/keyboard_windows.cpp
@@ -42,7 +42,7 @@ namespace BlackInput
         m_pressedKey.setKeyObject(CKeyboardKey());
     }
 
-    void CKeyboardWindows::triggerKey(const CKeyboardKey key, bool isPressed)
+    void CKeyboardWindows::triggerKey(const CKeyboardKey &key, bool isPressed)
     {
         if(!isPressed) emit keyUp(key);
         else emit keyDown(key);
diff --git a/src/blackinput/win/keyboard_windows.h b/src/blackinput/win/keyboard_windows.h
index 13487ea16..882ab6ff6 100644
--- a/src/blackinput/win/keyboard_windows.h
+++ b/src/blackinput/win/keyboard_windows.h
@@ -38,7 +38,7 @@ namespace BlackInput
         virtual void startCapture(bool ignoreNextKey = false) override;
 
         //! \copydoc IKeyboard::triggerKey()
-        virtual void triggerKey(const BlackMisc::Hardware::CKeyboardKey key, bool isPressed) override;
+        virtual void triggerKey(const BlackMisc::Hardware::CKeyboardKey &key, bool isPressed) override;
 
         //! \brief Keyboard hook handle
         HHOOK keyboardHook() const { return m_keyboardHook; }