diff --git a/server/install_script.sh b/server/install_script.sh
index 4e4e85e..4ca5597 100644
--- a/server/install_script.sh
+++ b/server/install_script.sh
@@ -45,11 +45,11 @@ fi
 sleep 1
 
 echo "INFO ! Setting server path."
-sed -i "s|^VSPATH=.*|VSPATH=\"'$VS_SERVER_DIR'\"|" $VS_SERVER_DIR/server-$VS_VERSION.sh
+sed -i -E "s|^VSPATH=.*|VSPATH=\"'$VS_SERVER_DIR'\"|" $VS_SERVER_DIR/server-$VS_VERSION.sh
 echo "INFO ! Setting data path."
-sed -i "s|^DATAPATH=.*|DATAPATH=\"'$VS_DATA_DIR'\"|" $VS_SERVER_DIR/server-$VS_VERSION.sh
+sed -i -E "s|^DATAPATH=.*|DATAPATH=\"'$VS_DATA_DIR'\"|" $VS_SERVER_DIR/server-$VS_VERSION.sh
 echo "INFO ! Setting username."
-sed -i "s|^USERNAME=.*|USERNAME=\"'$USERNAME'\"|" $VS_SERVER_DIR/server-$VS_VERSION.sh
+sed -i -E "s|^USERNAME=.*|USERNAME=\"'$USERNAME'\"|" $VS_SERVER_DIR/server-$VS_VERSION.sh
 
 sleep 1