diff --git a/pkgs/development/tools/exercism/default.nix b/pkgs/development/tools/exercism/default.nix
index 56434ec38d9..6c909382522 100644
--- a/pkgs/development/tools/exercism/default.nix
+++ b/pkgs/development/tools/exercism/default.nix
@@ -38,7 +38,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = {
-    description = "A Go based command line tool for exercism.io.";
+    description = "A Go based command line tool for exercism.io";
     homepage    = http://exercism.io;
     license     = stdenv.lib.licenses.mit;
     platforms   = stdenv.lib.platforms.unix;