diff --git a/pkgs/development/libraries/aterm/aterm-2.3.1.nix b/pkgs/development/libraries/aterm/2.3.nix
similarity index 100%
rename from pkgs/development/libraries/aterm/aterm-2.3.1.nix
rename to pkgs/development/libraries/aterm/2.3.nix
diff --git a/pkgs/development/libraries/aterm/aterm-2.4.nix b/pkgs/development/libraries/aterm/2.4.nix
similarity index 100%
rename from pkgs/development/libraries/aterm/aterm-2.4.nix
rename to pkgs/development/libraries/aterm/2.4.nix
diff --git a/pkgs/development/libraries/aterm/default.nix b/pkgs/development/libraries/aterm/default.nix
index 73f1747796d..9f0c09c4d2d 100644
--- a/pkgs/development/libraries/aterm/default.nix
+++ b/pkgs/development/libraries/aterm/default.nix
@@ -1 +1 @@
-import ./aterm-2.4.nix
+import ./2.4.nix
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index d8e5023207d..104d9a45de4 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -1153,7 +1153,7 @@ rec {
     inherit fetchurl stdenv;
   };
 
-  aterm23x = import ../development/libraries/aterm/aterm-2.3.1.nix {
+  aterm23x = import ../development/libraries/aterm/2.3.nix {
     inherit fetchurl stdenv;
   };