diff --git a/lib/setup-tools.js b/lib/setup-tools.js
index c86581fd2..ee11fbf2c 100644
--- a/lib/setup-tools.js
+++ b/lib/setup-tools.js
@@ -20,7 +20,7 @@ class CodeQLSetup {
         if (process.platform === 'win32') {
             this.platform = 'win64';
             if (this.cmd.endsWith('codeql')) {
-                this.cmd += ".cmd";
+                this.cmd += ".exe";
             }
         }
         else if (process.platform === 'linux') {
diff --git a/src/setup-tools.ts b/src/setup-tools.ts
index 1f878ec17..bb99ec7fb 100644
--- a/src/setup-tools.ts
+++ b/src/setup-tools.ts
@@ -17,7 +17,7 @@ export class CodeQLSetup {
     if (process.platform === 'win32') {
       this.platform = 'win64';
       if (this.cmd.endsWith('codeql')) {
-        this.cmd += ".cmd";
+        this.cmd += ".exe";
       }
     } else if (process.platform === 'linux') {
       this.platform = 'linux64';