diff --git a/pkgs/development/r-modules/default.nix b/pkgs/development/r-modules/default.nix
index ecc3d2d66b42..6b31dfca6b88 100644
--- a/pkgs/development/r-modules/default.nix
+++ b/pkgs/development/r-modules/default.nix
@@ -1373,6 +1373,10 @@ let
     });
 
     OpenMx = old.OpenMx.overrideAttrs (attrs: {
+      env = (attrs.env or { }) // {
+        # needed to avoid "log limit exceeded" on Hydra
+        NIX_CFLAGS_COMPILE = attrs.env.NIX_CFLAGS_COMPILE + " -Wno-ignored-attributes";
+      };
       preConfigure = ''
         patchShebangs configure
         '';