diff --git a/packages/core/src/flag/flag.ts b/packages/core/src/flag/flag.ts
index d27486c518b..a0eb78a13e2 100644
--- a/packages/core/src/flag/flag.ts
+++ b/packages/core/src/flag/flag.ts
@@ -6,6 +6,7 @@ export function truthy(key: string) {
 }
 
 const copy = process.env["OPENCODE_EXPERIMENTAL_DISABLE_COPY_ON_SELECT"]
+const fff = process.env["OPENCODE_DISABLE_FFF"]
 
 function enabledByExperimental(key: string) {
   return process.env[key] === undefined ? truthy("OPENCODE_EXPERIMENTAL") : truthy(key)
@@ -30,7 +31,7 @@ export const Flag = {
   OPENCODE_FAKE_VCS: process.env["OPENCODE_FAKE_VCS"],
   OPENCODE_SERVER_PASSWORD: process.env["OPENCODE_SERVER_PASSWORD"],
   OPENCODE_SERVER_USERNAME: process.env["OPENCODE_SERVER_USERNAME"],
-  OPENCODE_DISABLE_FFF: truthy("OPENCODE_DISABLE_FFF"),
+  OPENCODE_DISABLE_FFF: fff === undefined ? process.platform === "win32" : truthy("OPENCODE_DISABLE_FFF"),
 
   // Experimental
   OPENCODE_EXPERIMENTAL_FILEWATCHER: Config.boolean("OPENCODE_EXPERIMENTAL_FILEWATCHER").pipe(