diff --git a/README.md b/README.md
index 9cfc14b..be04ba9 100644
--- a/README.md
+++ b/README.md
@@ -199,7 +199,7 @@ func main() {
     }
 
         // Pass the API key to the signer client
-	ctx = metadata.AppendToOutgoingContext(ctx, "authorization", SIGNER_API_KEY)
+    ctx = metadata.AppendToOutgoingContext(ctx, "authorization", SIGNER_API_KEY)
     resp, err := c.SignGeneric(ctx, req)
     if err != nil {
         log.Fatalf("could not sign: %v", err)