diff --git a/pkgs/by-name/ed/edopro/package.nix b/pkgs/by-name/ed/edopro/package.nix
index de7b73e63a7a..b1cbf4532474 100644
--- a/pkgs/by-name/ed/edopro/package.nix
+++ b/pkgs/by-name/ed/edopro/package.nix
@@ -232,7 +232,7 @@ let
     # (can't use --prebuilt-core or let it build a core on its own without making core updates impossible)
     postPatch = ''
       substituteInPlace premake5.lua \
-        --replace-fail 'flags "LinkTimeOptimization"' 'removeflags "LinkTimeOptimization"'
+        --replace-fail 'flags "LinkTimeOptimization"' 'linktimeoptimization "Off"'
 
       substituteInPlace gframe/game.cpp \
         --replace-fail 'ocgcore = LoadOCGcore(Utils::GetWorkingDirectory())' 'ocgcore = LoadOCGcore("${lib.getLib ocgcore}/lib/")'