diff --git a/testing/install_script.sh b/testing/install_script.sh
index 5ff0597..8fb9b6b 100644
--- a/testing/install_script.sh
+++ b/testing/install_script.sh
@@ -90,9 +90,7 @@ echo "INFO ! Setting game port."
 sed -i '/server-port='*'/c\server-port='$GAME_PORT'' /MCserver/server.properties
 
 echo "INFO ! Setting java memory size."
-sed -i '/-Xmx'*'/c\-Xmx'$XMX'' /MCserver/run-*.sh
-sed -i '/-Xms'*'/c\-Xms'$XMS'' /MCserver/run-*.sh
-sed -i '/-Xmn'*'/c\-Xmn'$XMN'' /MCserver/run-*.sh
+sed -i '/java -Xmx'*' -Xms'*' -Xmn'*' -jar $JAR nogui/c\java -Xmx'$XMX' -Xms'$XMS' -Xmn'$XMN' -jar $JAR nogui' /MCserver/run-*.sh
 sleep 1
 
 # Set permissions.