diff --git a/elisp/ghc-func.el b/elisp/ghc-func.el
index 0d75f7f..0673fab 100644
--- a/elisp/ghc-func.el
+++ b/elisp/ghc-func.el
@@ -156,7 +156,10 @@
             (turn-off-haskell-font-lock)
           (haskell-font-lock-defaults-create)
           (turn-on-haskell-font-lock)))
-      (display-buffer buf))))
+      (display-buffer buf 
+        '((display-buffer-reuse-window
+           display-buffer-pop-up-window)
+          (window-height . 20))))))
 
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