diff --git a/update b/update
index 46bead5..9b4b218 100755
--- a/update
+++ b/update
@@ -3,9 +3,13 @@
 # [1] Send data + fetch configuration
 /home/sats/satsd/source/lib/api/sync;
 
+test $? -ne 0 && exit 127;
+
 # [2] Update source
 BRANCH=$(cat /home/sats/satsd/conf/machine.branch);
 
 cd /home/sats/satsd/source/;
 git checkout $BRANCH;
+test $? -ne 0 && exit 127;
 git pull origin $BRANCH;
+test $? -ne 0 && exit 127;