diff --git a/packages/app-builder-lib/templates/nsis/assistedInstaller.nsh b/packages/app-builder-lib/templates/nsis/assistedInstaller.nsh
index 03f4decbbf2..26226b2ac97 100644
--- a/packages/app-builder-lib/templates/nsis/assistedInstaller.nsh
+++ b/packages/app-builder-lib/templates/nsis/assistedInstaller.nsh
@@ -31,11 +31,9 @@
 
     # sanitize the MUI_PAGE_DIRECTORY result to make sure it has a application name sub-folder
     Function instFilesPre
-      ${If} ${FileExists} "$INSTDIR\*"
-        ${StrContains} $0 "${APP_FILENAME}" $INSTDIR
-        ${If} $0 == ""
-          StrCpy $INSTDIR "$INSTDIR\${APP_FILENAME}"
-        ${endIf}
+      ${StrContains} $0 "${APP_FILENAME}" $INSTDIR
+      ${If} $0 == ""
+        StrCpy $INSTDIR "$INSTDIR\${APP_FILENAME}"
       ${endIf}
     FunctionEnd
   !endif