diff --git a/README.md b/README.md
index 64e63331..487f7a02 100644
--- a/README.md
+++ b/README.md
@@ -23,7 +23,6 @@
 | `--force-unit-tests`        | Always compile unit tests.                     |
 | `--force-exception-handler` | Install custom unhandled exception handler even for Debug builds. |
 | `--disable-binary-check`    | Do not perform integrity checks on the exe. |
-| `--iw4x-zones`              | Zonebuilder generates iw4x zones that cannot be loaded without IW4x specific patches. |
 
 ## Command line arguments
 
diff --git a/premake5.lua b/premake5.lua
index 5ca05e35..3f36f4bd 100644
--- a/premake5.lua
+++ b/premake5.lua
@@ -86,11 +86,6 @@ newoption {
 	description = "Do not perform integrity checks on the exe."
 }
 
-newoption {
-	trigger = "iw4x-zones",
-	description = "Zonebuilder generates iw4x zones that cannot be loaded without IW4x specific patches."
-}
-
 newaction {
 	trigger = "version",
 	description = "Returns the version string for the current commit of the source code.",
@@ -268,9 +263,6 @@ workspace "iw4x"
 		if _OPTIONS["disable-binary-check"] then
 			defines {"DISABLE_BINARY_CHECK"}
 		end
-		if _OPTIONS["iw4x-zones"] then
-			defines {"GENERATE_IW4X_SPECIFIC_ZONES"}
-		end
 
 		-- Pre-compiled header
 		pchheader "STDInclude.hpp" -- must be exactly same as used in #include directives