diff --git a/src/platform/capslock_x11.cpp b/src/platform/capslock_x11.cpp
index 141ddb429..62b455bf1 100644
--- a/src/platform/capslock_x11.cpp
+++ b/src/platform/capslock_x11.cpp
@@ -35,6 +35,7 @@ bool Platform::capsLockEnabled()
         unsigned n;
         XkbGetIndicatorState(d, XkbUseCoreKbd, &n);
         caps_state = (n & 0x01) == 1;
+        XCloseDisplay(d);
     }
     return caps_state;
 }