diff --git a/pkgs/applications/misc/ikiwiki/default.nix b/pkgs/applications/misc/ikiwiki/default.nix
index f3fb575c6e5..35ce5478d90 100644
--- a/pkgs/applications/misc/ikiwiki/default.nix
+++ b/pkgs/applications/misc/ikiwiki/default.nix
@@ -70,6 +70,11 @@ stdenv.mkDerivation {
     done
   '';
 
+  preCheck = ''
+    # Git needs some help figuring this out during test suite run.
+    export EMAIL="nobody@example.org"
+  '';
+
   checkTarget = "test";
   doCheck = true;