diff --git a/pkgs/development/libraries/theft/default.nix b/pkgs/development/libraries/theft/default.nix
index 909df510dff..345401dfa76 100644
--- a/pkgs/development/libraries/theft/default.nix
+++ b/pkgs/development/libraries/theft/default.nix
@@ -22,7 +22,7 @@ stdenv.mkDerivation rec {
     '';
   
   meta = {
-    description = "A C library for property-based testing.";
+    description = "A C library for property-based testing";
     platforms = stdenv.lib.platforms.linux;
     homepage = "http://github.com/silentbicycle/theft/";
     license = stdenv.lib.licenses.isc;