diff --git a/pkgs/by-name/do/dolphin-emu/package.nix b/pkgs/by-name/do/dolphin-emu/package.nix
index afa43c77c80b..c102248b3ffb 100644
--- a/pkgs/by-name/do/dolphin-emu/package.nix
+++ b/pkgs/by-name/do/dolphin-emu/package.nix
@@ -132,8 +132,9 @@ stdenv.mkDerivation (finalAttrs: {
     (lib.cmakeFeature "DISTRIBUTOR" "NixOS")
     (lib.cmakeFeature "DOLPHIN_WC_DESCRIBE" finalAttrs.version)
     (lib.cmakeFeature "DOLPHIN_WC_BRANCH" "master")
-    # Fix building v2509, should be removed in the future
-    "-DCMAKE_POLICY_VERSION_MINIMUM=3.5"
+    # CMake 4 dropped support of versions lower than 3.5,
+    # versions lower than 3.10 are deprecated.
+    (lib.cmakeFeature "CMAKE_POLICY_VERSION_MINIMUM" "3.10")
   ]
   ++ lib.optionals stdenv.hostPlatform.isDarwin [
     (lib.cmakeBool "OSX_USE_DEFAULT_SEARCH_PATH" true)