diff --git a/scripts/update_version.sh b/scripts/update_version.sh
index 69cdfef..f2ef802 100755
--- a/scripts/update_version.sh
+++ b/scripts/update_version.sh
@@ -59,7 +59,7 @@ function update_changelog() {
     let NEXT=$REVISION+1
     echo "Last revision is $REVISION, next is $NEXT"
 
-    cat $SRS_HOME/trunk/src/core/srs_core_version${VERSION}.hpp |sed "s/${REVISION}/${NEXT}/g" > $SRS_HOME/trunk/src/core/srs_core_version${VERSION}.hpp.tmp &&
+    cat $SRS_HOME/trunk/src/core/srs_core_version${VERSION}.hpp |sed "s/VERSION_REVISION    ${REVISION}/VERSION_REVISION    ${NEXT}/g" > $SRS_HOME/trunk/src/core/srs_core_version${VERSION}.hpp.tmp &&
     mv $SRS_HOME/trunk/src/core/srs_core_version${VERSION}.hpp.tmp $SRS_HOME/trunk/src/core/srs_core_version${VERSION}.hpp
     ret=$?; if [[ $ret -ne 0 ]]; then echo "Failed to update version"; exit $ret; fi