diff --git a/priv/libexec/commands/win/install.ps1 b/priv/libexec/commands/win/install.ps1
index cdf7d9ef..0f129e3f 100644
--- a/priv/libexec/commands/win/install.ps1
+++ b/priv/libexec/commands/win/install.ps1
@@ -32,7 +32,7 @@ $service_argv += "++"
 $service_argv += "-noconfig"
 $service_argv += @("-rootdir", $Env:RELEASE_ROOT_DIR)
 $service_argv += @("-reldir", (join-path $Env:RELEASE_ROOT_DIR "releases"))
-$service_argv += @("-data", "$Env:START_ERL_DATA)
+$service_argv += @("-data", $Env:START_ERL_DATA)
 
 $service_argv = $service_argv | foreach { 
     if ($_.StartsWith("-") -or $_.StartsWith("+")) {