diff --git a/pkgs/development/tools/wlcs/default.nix b/pkgs/development/tools/wlcs/default.nix
index 51e227ad0262..453da9b06be7 100644
--- a/pkgs/development/tools/wlcs/default.nix
+++ b/pkgs/development/tools/wlcs/default.nix
@@ -34,6 +34,7 @@ stdenv.mkDerivation (finalAttrs: {
     boost
     gtest
     wayland
+    wayland-scanner # needed by cmake
   ];
 
   passthru = {