diff --git a/server/install_script.sh b/server/install_script.sh
index b59d5f4..8cddd1f 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 -E "s|^VSPATH=.*$|VSPATH=\"'$VS_SERVER_DIR'\"|" $VS_SERVER_DIR/server-$VS_VERSION.sh
+sed -i "|^VSPATH=.*$|VSPATH=\"'$VS_SERVER_DIR'\"|" $VS_SERVER_DIR/server-$VS_VERSION.sh
 echo "INFO ! Setting data path."
-sed -i -E "s|^DATAPATH=.*$|DATAPATH=\"'$VS_DATA_DIR'\"|" $VS_SERVER_DIR/server-$VS_VERSION.sh
+sed -i "|^DATAPATH=.*$|DATAPATH=\"'$VS_DATA_DIR'\"|" $VS_SERVER_DIR/server-$VS_VERSION.sh
 echo "INFO ! Setting username."
-sed -i -E "s|^USERNAME=.*$|USERNAME=\"'$USERNAME'\"|" $VS_SERVER_DIR/server-$VS_VERSION.sh
+sed -i "|^USERNAME=.*$|USERNAME=\"'$USERNAME'\"|" $VS_SERVER_DIR/server-$VS_VERSION.sh
 
 sleep 1