diff --git a/pkgs/development/interpreters/pypy/2.3/default.nix b/pkgs/development/interpreters/pypy/2.3/default.nix
index 1b3261313c52..a364b24c04c5 100644
--- a/pkgs/development/interpreters/pypy/2.3/default.nix
+++ b/pkgs/development/interpreters/pypy/2.3/default.nix
@@ -75,6 +75,9 @@ let
        ln -s $out/pypy-c/include $out/include/${libPrefix}
        ln -s $out/pypy-c/lib-python/${pythonVersion} $out/lib/${libPrefix}
 
+       # verify cffi modules
+       $out/bin/pypy -c "import Tkinter"
+
        # TODO: compile python files?
     '';