diff --git a/frontend/dockerfile/dockerfile2llb/convert.go b/frontend/dockerfile/dockerfile2llb/convert.go
index 419796b4..b19c8951 100644
--- a/frontend/dockerfile/dockerfile2llb/convert.go
+++ b/frontend/dockerfile/dockerfile2llb/convert.go
@@ -1284,7 +1284,7 @@ func prefixCommand(ds *dispatchState, str string, prefixPlatform bool, platform
 }
 
 func useFileOp(args map[string]string, caps *apicaps.CapSet) bool {
-	enabled := fileOpEnabled
+	enabled := true
 	if v, ok := args["BUILDKIT_USE_FILEOP"]; ok {
 		if b, err := strconv.ParseBool(v); err == nil {
 			enabled = b
diff --git a/frontend/dockerfile/dockerfile2llb/convert_fileop.go b/frontend/dockerfile/dockerfile2llb/convert_fileop.go
deleted file mode 100644
index 9c8abc7c..00000000
--- a/frontend/dockerfile/dockerfile2llb/convert_fileop.go
+++ /dev/null
@@ -1,5 +0,0 @@
-// +build fileop
-
-package dockerfile2llb
-
-const fileOpEnabled = true
diff --git a/frontend/dockerfile/dockerfile2llb/convert_nofileop.go b/frontend/dockerfile/dockerfile2llb/convert_nofileop.go
deleted file mode 100644
index f8f7582b..00000000
--- a/frontend/dockerfile/dockerfile2llb/convert_nofileop.go
+++ /dev/null
@@ -1,5 +0,0 @@
-// +build !fileop
-
-package dockerfile2llb
-
-const fileOpEnabled = false