Index: schema/pgFunction.cpp
===================================================================
--- schema/pgFunction.cpp	(revision 7881)
+++ schema/pgFunction.cpp	(working copy)
@@ -321,7 +321,7 @@
         // Parameter default value
         if (GetConnection()->HasFeature(FEATURE_FUNCTION_DEFAULTS) || GetConnection()->BackendMinimumVersion(8, 4))
         {
-            if (!argDefsArray.Item(i).IsEmpty())
+            if (argDefsArray.Count() != 0 && !argDefsArray.Item(i).IsEmpty())
                 arg += wxT(" DEFAULT ") + argDefsArray.Item(i);
         }