diff --git a/Quake/gl_screen.c b/Quake/gl_screen.c
index b0ea7804..febb08fa 100644
--- a/Quake/gl_screen.c
+++ b/Quake/gl_screen.c
@@ -884,6 +884,7 @@ int SCR_ModalMessage (const char *text, float timeout) //johnfitz -- timeout
 		key_count = -1;		// wait for a key down and up
 		Sys_SendKeyEvents ();
 		if (timeout) time2 = Sys_DoubleTime (); //johnfitz -- zero timeout means wait forever.
+		Sys_Sleep(16);
 	} while (key_lastpress != 'y' &&
 			 key_lastpress != 'n' &&
 			 key_lastpress != K_ESCAPE &&