diff --git a/fmm/src/fmm/linear.rs b/fmm/src/fmm.rs
similarity index 100%
rename from fmm/src/fmm/linear.rs
rename to fmm/src/fmm.rs
diff --git a/fmm/src/lib.rs b/fmm/src/lib.rs
index 3b708a71..e543c2a9 100644
--- a/fmm/src/lib.rs
+++ b/fmm/src/lib.rs
@@ -1,6 +1,7 @@
 //! A a general framework for implementing Fast Multipole Methods.
 pub mod charge;
 pub mod constants;
+pub mod fmm;
 pub mod interaction_lists;
 pub mod pinv;
 pub mod types;
@@ -11,7 +12,3 @@ mod field_translation {
     pub mod source_to_target;
     pub mod target;
 }
-
-mod fmm {
-    pub mod linear;
-}