diff --git a/webui/src/main/java/com/muwire/webui/ConfigurationServlet.java b/webui/src/main/java/com/muwire/webui/ConfigurationServlet.java
index 4fa17403..973f04b1 100644
--- a/webui/src/main/java/com/muwire/webui/ConfigurationServlet.java
+++ b/webui/src/main/java/com/muwire/webui/ConfigurationServlet.java
@@ -107,11 +107,11 @@ public class ConfigurationServlet extends HttpServlet {
         File f = new File(s);
         f = f.getCanonicalFile();
         if (!f.exists())
-            throw new Exception(Util._t("Bad input") + ":" + Util._t("{0} does not exist",s));
+            throw new Exception(Util._t("Bad input") + " : " + Util._t("{0} does not exist",s));
         if (!f.isDirectory())
-            throw new Exception(Util._t("Bad input") + ":" + Util._t("{0} is not a directory",s));
+            throw new Exception(Util._t("Bad input") + " : " + Util._t("{0} is not a directory",s));
         if (!f.canWrite())
-            throw new Exception(Util._t("Bad input") + ":" + Util._t("{0} not writeable",s));
+            throw new Exception(Util._t("Bad input") + " : " + Util._t("{0} not writeable",s));
         return f;
     }