diff --git a/CSharpTranslator/antlr3/mkit b/CSharpTranslator/antlr3/mkit
index 9677365..dfd6abe 100755
--- a/CSharpTranslator/antlr3/mkit
+++ b/CSharpTranslator/antlr3/mkit
@@ -1,5 +1,7 @@
 #!/bin/sh
 
+set -e
+
 cd src/cs2j/CSharp
 java -Xmx512m -jar ../../../jar/antlr-3.3.jar -make cs.g
 java -Xmx512m -jar ../../../jar/antlr-3.3.jar -make TemplateExtracter.g