diff --git a/glfw3.h b/glfw3.h
index 4c728d4..9bf3bc5 100644
--- a/glfw3.h
+++ b/glfw3.h
@@ -1319,7 +1319,7 @@ GLFWmonitor* glfwGetWindowMonitor(GLFWwindow* window);
  *
  *  @ingroup window
  */
-int glfwGetWindowAttrib(GLFWwindow* window, int attrib);
+___safe int glfwGetWindowAttrib(GLFWwindow* window, int attrib);
 
 /*! @brief Sets the user pointer of the specified window.
  *