diff --git a/push-update.sh b/push-update.sh
index 22af8bf..ba5468b 100755
--- a/push-update.sh
+++ b/push-update.sh
@@ -24,13 +24,14 @@ VERSION_PREVIOUS=`sed -n '4,4p' CHANGELOG.md | cut -d "(" -f1`
 if [ `git rev-parse ${VERSION_PREVIOUS}` != `git rev-parse HEAD` ]
 then
     VERSION=`echo ${VERSION_PREVIOUS} | awk -F. -v OFS=. 'NF==1{print ++$NF}; NF>1{if(length($NF+1)>length($NF))$(NF-1)++; $NF=sprintf("%0*d", length($NF), ($NF+1)%(10^length($NF))); print}'`
-    git tag $VERSION &&
+    git tag "$VERSION" &&
     gitchangelog > CHANGELOG.md &&
-    (git add CHANGELOG.md > /dev/null &&
-    git commit -m 'Update CHANGELOG.md' > /dev/null &&
-    git push --tags > /dev/null) ||
-    (echo -e "Cannot push released tag into remote repository\n" &&
-    exit 1)
+    { git add CHANGELOG.md > /dev/null &&
+    git commit -m "Update CHANGELOG.md" > /dev/null &&
+    git tag "$VERSION" &&
+    git push --tags >/dev/null 2>/dev/null; } ||
+    { echo -e "Cannot push released tag into remote repository\n" &&
+    exit 1; }
 else
     VERSION=$VERSION_PREVIOUS
 fi
@@ -41,31 +42,29 @@ CURRENT_DIR=`pwd`
 for project in "${PROJECTS[@]}"
 do
 	echo -e "Update lib for ${project}...\n"
-	(cd "${project}${PATH_LIB}" &&
+	{cd "${project}${PATH_LIB}" &&
 	git fetch >/dev/null 2>/dev/null &&
-	git checkout $VERSION 2>/dev/null) ||
-	(echo -e "Failed to checkout lib on tag ${VERSION}\n" &&
-	exit 1)
+	git checkout $VERSION 2>/dev/null; } ||
+	{ echo -e "Failed to checkout lib on tag ${VERSION}\n" &&
+	exit 1; }
 	cd "${project}"
 	LIB_DIR=`echo ${PATH_LIB#'/'}`
 	git diff-index --quiet HEAD "$LIB_DIR"
 	LIB_NEW_COMMITS=`echo $?`
 	if [ $LIB_NEW_COMMITS == 1 ]
 	then
-	    echo -e "`pwd`\n"
-	    exit 1
-	    (git reset > /dev/null &&
+	    { git reset > /dev/null &&
         git add "$LIB_DIR" > /dev/null &&
-        git commit -m $MESSAGE > /dev/null) ||
-        (echo -e "Failed to update lib for ${project}\n" &&
-        exit 1)
+        git commit -m "$MESSAGE" > /dev/null; } ||
+        { echo -e "Failed to update lib for ${project}\n" &&
+        exit 1; }
         if [ $project == "/var/www/d753_common" ]
         then
-            (git push origin master > /dev/null &&
+            { git push origin master > /dev/null &&
             cd /var/www/d753/ && ./merge-from-master.sh > /dev/null
-            cd /var/www/d753_10ballov/ && ./merge-from-master.sh > /dev/null) ||
-            (echo -e "Failed to update dependency d753 branches... Please resolve that problem by hand\n" &&
-            exit 1)
+            cd /var/www/d753_10ballov/ && ./merge-from-master.sh > /dev/null; } ||
+            { echo -e "Failed to update dependency d753 branches... Please resolve that problem by hand\n" &&
+            exit 1; }
         fi
     else
         echo -e "Already update\n"