diff --git a/dist/index.js b/dist/index.js
index 210cdf3..8942fb9 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -282,7 +282,7 @@ class DotnetCoreInstaller {
                 if (process.env['no_proxy'] != null) {
                     command += ` -ProxyBypassList ${process.env['no_proxy']}`;
                 }
-                command += ` -InstallDir ${DotnetCoreInstaller.installationDirectoryWindows}`;
+                command += ` -InstallDir '${DotnetCoreInstaller.installationDirectoryWindows}'`;
                 // process.env must be explicitly passed in for DOTNET_INSTALL_DIR to be used
                 const powershellPath = yield io.which('powershell', true);
                 var options = {
@@ -357,7 +357,7 @@ class DotnetCoreInstaller {
     }
 }
 exports.DotnetCoreInstaller = DotnetCoreInstaller;
-DotnetCoreInstaller.installationDirectoryWindows = `'${path.join(process.env['PROGRAMFILES'] + '', "dotnet")}'`;
+DotnetCoreInstaller.installationDirectoryWindows = path.join(process.env['PROGRAMFILES'] + '', "dotnet");
 DotnetCoreInstaller.installationDirectoryLinux = '/usr/share/dotnet';
 function logWarning(message) {
     const warningPrefix = '[warning]';
diff --git a/src/installer.ts b/src/installer.ts
index 86fee04..5f5c5b3 100644
--- a/src/installer.ts
+++ b/src/installer.ts
@@ -83,7 +83,7 @@ export class DotnetVersionResolver {
 export class DotnetCoreInstaller {
   private version: string;
   private quality: string;
-  static installationDirectoryWindows = `'${path.join(process.env['PROGRAMFILES'] + '', "dotnet")}'`;
+  static installationDirectoryWindows = path.join(process.env['PROGRAMFILES'] + '', "dotnet");
   static installationDirectoryLinux = '/usr/share/dotnet';
 
   constructor(version: string, quality: string) {
@@ -130,7 +130,7 @@ export class DotnetCoreInstaller {
         command += ` -ProxyBypassList ${process.env['no_proxy']}`;
       }
 
-      command += ` -InstallDir ${DotnetCoreInstaller.installationDirectoryWindows}`;
+      command += ` -InstallDir '${DotnetCoreInstaller.installationDirectoryWindows}'`;
 
       // process.env must be explicitly passed in for DOTNET_INSTALL_DIR to be used
       const powershellPath = await io.which('powershell', true);