diff --git a/src/cocoa_window.m b/src/cocoa_window.m
index 4a2c0c35..47230249 100644
--- a/src/cocoa_window.m
+++ b/src/cocoa_window.m
@@ -1094,6 +1094,11 @@ void _glfwPlatformSetCursorMode(_GLFWwindow* window, int mode)
     }
 }
 
+const char*_glfwPlatformGetKeyName(int key)
+{
+	// TODO: Implement.
+	return NULL;
+}
 
 //////////////////////////////////////////////////////////////////////////
 //////                        GLFW native API                       //////
diff --git a/src/x11_window.c b/src/x11_window.c
index 9b3791c2..b15304bd 100644
--- a/src/x11_window.c
+++ b/src/x11_window.c
@@ -1163,6 +1163,11 @@ void _glfwPlatformSetCursorMode(_GLFWwindow* window, int mode)
     }
 }
 
+const char*_glfwPlatformGetKeyName(int key)
+{
+	// TODO: Implement.
+	return NULL;
+}
 
 //////////////////////////////////////////////////////////////////////////
 //////                        GLFW native API                       //////