diff --git a/utils/shgit b/utils/shgit
index 0ce738d..4c7ffd9 100644
--- a/utils/shgit
+++ b/utils/shgit
@@ -45,8 +45,11 @@ shgit()
 		status=${SHGIT_SEP}?
 	fi
 
-	IFS="	" set -- $(git rev-list --left-right --count \
-	    @{upstream}...HEAD 2>/dev/null)
+	oldIFS=$IFS
+	IFS="	"
+	set -- $(git rev-list --left-right --count @{upstream}...HEAD \
+	    2>/dev/null)
+	IFS=$oldIFS
 	commits=v${1:-0}^${2:-0}
 	commits=${commits#v0}
 	commits=${commits%^0}