diff --git a/pkgs/development/libraries/libcdio/default.nix b/pkgs/development/libraries/libcdio/default.nix
index b9d815be083..e048c921794 100644
--- a/pkgs/development/libraries/libcdio/default.nix
+++ b/pkgs/development/libraries/libcdio/default.nix
@@ -9,6 +9,8 @@ stdenv.mkDerivation rec {
 
   buildInputs = [ libcddb pkgconfig ncurses ];
 
+  doCheck = true;
+
   meta = {
     description = ''GNU libcdio is a library for OS-idependent CD-ROM and
                     CD image access.  It includes a library for working with
diff --git a/pkgs/tools/misc/idutils/default.nix b/pkgs/tools/misc/idutils/default.nix
index 42aaf8933f2..0b77921e349 100644
--- a/pkgs/tools/misc/idutils/default.nix
+++ b/pkgs/tools/misc/idutils/default.nix
@@ -9,6 +9,8 @@ stdenv.mkDerivation rec {
 
   buildInputs = [ emacs ];
 
+  doCheck = true;
+
   meta = {
     description = "GNU Idutils, a text searching utility";