diff --git a/cli/download_source.go b/cli/download_source.go
index 035893e6c..a9de53e5a 100644
--- a/cli/download_source.go
+++ b/cli/download_source.go
@@ -14,6 +14,7 @@ import (
 	"fmt"
 )
 
+// This struct represents information about Terraform source code that needs to be downloaded
 type TerraformSource struct {
 	// A canonical version of RawSource, in URL format
 	CanonicalSourceURL *url.URL