diff --git a/installer.nsh b/installer.nsh
new file mode 100644
index 0000000..6c146a8
--- /dev/null
+++ b/installer.nsh
@@ -0,0 +1,8 @@
+!define DIR_NAME "JUSTAR"
+
+Function .onVerifyInstDir
+  StrLen $0 "\${DIR_NAME}"
+  StrCpy $1 "$INSTDIR" "" -$0
+  StrCmp $1 "\${DIR_NAME}" +2 0
+  StrCpy $INSTDIR "$INSTDIR\${DIR_NAME}"
+FunctionEnd
\ No newline at end of file
diff --git a/package.json b/package.json
index ffcdbab..5c7af91 100644
--- a/package.json
+++ b/package.json
@@ -79,7 +79,7 @@
       "runAfterFinish": true,
       "installerIcon": "./static/images/justar.ico",
       "uninstallerIcon": "./static/images/justar.ico",
-      "include":""
+      "include":"./installer.nsh"
     }
   },
   "dependencies": {