diff --git a/build.libgit2sharp.sh b/build.libgit2sharp.sh
index d650afd26..f9527cbb0 100755
--- a/build.libgit2sharp.sh
+++ b/build.libgit2sharp.sh
@@ -1,4 +1,5 @@
 #!/bin/bash
+set -e
 
 LIBGIT2SHA=`cat ./LibGit2Sharp/libgit2_hash.txt`
 SHORTSHA=${LIBGIT2SHA:0:7}