diff --git a/lib/setup-terraform.js b/lib/setup-terraform.js
index 40ee0b1..0922c07 100644
--- a/lib/setup-terraform.js
+++ b/lib/setup-terraform.js
@@ -138,6 +138,8 @@ async function run () {
     }
 
     const pathToCLI = tc.find('terraform', version, arch);
+
+    // check if tool exists in cache, if not, download and cache it
     if (!pathToCLI) {
       // Download requested version
       const pathToCLI = await downloadCLI(build.url);