diff --git a/sync-history.sh b/sync-history.sh
index 3b1ad62..5d8531c 100755
--- a/sync-history.sh
+++ b/sync-history.sh
@@ -38,7 +38,7 @@ fi
 # merge session history into main history file on bash exit
 merge_session_history () {
   if [ -e ${HISTFILE}.$$ ]; then
-    cat ${HISTFILE}.$$ >> $HISTFILE
+    \cat ${HISTFILE}.$$ >> $HISTFILE
     \rm ${HISTFILE}.$$
   fi
 }