diff --git a/glfw/cocoa_monitor.m b/glfw/cocoa_monitor.m
index 042ac8b7e..76bb92980 100644
--- a/glfw/cocoa_monitor.m
+++ b/glfw/cocoa_monitor.m
@@ -89,7 +89,7 @@ static char* getDisplayName(CGDirectDisplayID displayID)
     if (!service)
     {
         _glfwInputError(GLFW_PLATFORM_ERROR,
-                        "Cocoa: Failed to find service port for display");
+                        "Cocoa: Failed to find service port for display, cannot get its name, using Unknown");
         return NULL;
     }