diff --git a/hive-forge/src/verbs/diff.rs b/hive-forge/src/verbs/diff.rs
index 37979765..5a2632c4 100644
--- a/hive-forge/src/verbs/diff.rs
+++ b/hive-forge/src/verbs/diff.rs
@@ -32,7 +32,7 @@ pub struct Args {
 }
 
 pub fn run(client: &Client, args: Args) -> Result<()> {
-    refuse_json(client.json_mode(), "diff", "a diff is text by nature")?;
+    refuse_json(client.json_mode(), "pr diff", "a diff is text by nature")?;
     let (owner, name) = client.owner_repo()?;
     let diff = client
         .api()