diff --git a/pkgs/by-name/cm/cmake/package.nix b/pkgs/by-name/cm/cmake/package.nix
index 2eefa0c35d83..01cf2265ee65 100644
--- a/pkgs/by-name/cm/cmake/package.nix
+++ b/pkgs/by-name/cm/cmake/package.nix
@@ -158,11 +158,6 @@ stdenv.mkDerivation (finalAttrs: {
     "--sphinx-info"
     "--sphinx-man"
   ]
-  # Workaround https://gitlab.kitware.com/cmake/cmake/-/issues/20568
-  ++ lib.optionals stdenv.hostPlatform.is32bit [
-    "CFLAGS=-D_FILE_OFFSET_BITS=64"
-    "CXXFLAGS=-D_FILE_OFFSET_BITS=64"
-  ]
   ++ [
     "--"
     # We should set the proper `CMAKE_SYSTEM_NAME`.