diff --git a/exercises/if/if3.rs b/exercises/if/if3.rs
index 73a7025..1696274 100644
--- a/exercises/if/if3.rs
+++ b/exercises/if/if3.rs
@@ -29,6 +29,7 @@ pub fn animal_habitat(animal: &str) -> &'static str {
     habitat
 }
 
+// No test changes needed.
 #[cfg(test)]
 mod tests {
     use super::*;