diff --git a/src/x11_joystick.c b/src/x11_joystick.c
index 7f4fdbc1..09885373 100644
--- a/src/x11_joystick.c
+++ b/src/x11_joystick.c
@@ -127,7 +127,7 @@ static void pollJoystickEvents(void)
             if (errno == ENODEV)
                 _glfwLibrary.X11.joystick[i].present = GL_FALSE;
 
-            if (result <= 0)
+            if (result < sizeof(e))
                 break;
 
             // We don't care if it's an init event or not