diff --git a/src/msw/ole/automtn.cpp b/src/msw/ole/automtn.cpp
index 3870d96263..157a4200bb 100644
--- a/src/msw/ole/automtn.cpp
+++ b/src/msw/ole/automtn.cpp
@@ -183,6 +183,8 @@ bool wxAutomationObject::Invoke(const wxString& member, int action,
 	if (FAILED(hr)) 
 	{
 //		ShowException(szMember, hr, NULL, 0);
+        delete[] argNames;
+        delete[] dispIds;
 		return FALSE;
 	}
 
@@ -201,7 +203,12 @@ bool wxAutomationObject::Invoke(const wxString& member, int action,
 	{
 		// Again, reverse args
 		if (!ConvertVariantToOle(INVOKEARG((noArgs-1) - i), oleArgs[i]))
-			return FALSE; // TODO: clean up memory at this point
+        {
+	        delete[] argNames;
+	        delete[] dispIds;
+            delete[] oleArgs;
+			return FALSE;
+        }
 	}
 
 	dispparams.rgdispidNamedArgs = dispIds + 1;