diff --git a/src/interpreter/mod.rs b/src/interpreter/mod.rs
index 410b7a3d79e..6a21714f0d6 100644
--- a/src/interpreter/mod.rs
+++ b/src/interpreter/mod.rs
@@ -23,7 +23,7 @@ use primval::{self, PrimVal};
 
 use std::collections::HashMap;
 
-mod stepper;
+mod step;
 
 pub struct EvalContext<'a, 'tcx: 'a> {
     /// The results of the type checker, from rustc.
diff --git a/src/interpreter/stepper.rs b/src/interpreter/step.rs
similarity index 100%
rename from src/interpreter/stepper.rs
rename to src/interpreter/step.rs