diff --git a/src/java/org/lwjgl/opengl/LinuxDisplay.java b/src/java/org/lwjgl/opengl/LinuxDisplay.java
index 1b7c808f..48a2798b 100644
--- a/src/java/org/lwjgl/opengl/LinuxDisplay.java
+++ b/src/java/org/lwjgl/opengl/LinuxDisplay.java
@@ -894,11 +894,11 @@ final class LinuxDisplay implements DisplayImplementation {
 
 		if (focused) {
 			acquireInput();
-			if (!xembedded) parent.setFocusable(false);
+			if (parent != null && !xembedded) parent.setFocusable(false);
 		}
 		else {
 			releaseInput();
-			if (!xembedded) parent.setFocusable(true);
+			if (parent != null && !xembedded) parent.setFocusable(true);
 		}
 	}
 	static native long nGetInputFocus(long display);