diff --git a/commands/sketch/warn_deprecated.go b/commands/sketch/warn_deprecated.go
new file mode 100644
index 00000000000..a78f7156973
--- /dev/null
+++ b/commands/sketch/warn_deprecated.go
@@ -0,0 +1,36 @@
+// This file is part of arduino-cli.
+//
+// Copyright 2020 ARDUINO SA (http://www.arduino.cc/)
+//
+// This software is released under the GNU General Public License version 3,
+// which covers the main part of arduino-cli.
+// The terms of this license can be found at:
+// https://www.gnu.org/licenses/gpl-3.0.en.html
+//
+// You can be released from the requirements of the above licenses by purchasing
+// a commercial license. Buying such a license is mandatory if you want to
+// modify or otherwise use the software for commercial activities involving the
+// Arduino software without disclosing the source code of your own applications.
+// To purchase a commercial license, send an email to license@arduino.cc.
+
+package sketch
+
+import (
+	"fmt"
+
+	"github.com/arduino/arduino-cli/arduino/sketch"
+	paths "github.com/arduino/go-paths-helper"
+)
+
+// WarnDeprecatedFiles warns the user that a type of sketch files are deprecated
+func WarnDeprecatedFiles(sketchPath *paths.Path) string {
+	// .pde files are still supported but deprecated, this warning urges the user to rename them
+	if files := sketch.CheckForPdeFiles(sketchPath); len(files) > 0 {
+		msg := tr("Sketches with .pde extension are deprecated, please rename the following files to .ino:")
+		for _, f := range files {
+			msg += fmt.Sprintf("\n - %s", f)
+		}
+		return msg
+	}
+	return ""
+}
diff --git a/internal/cli/arguments/sketch.go b/internal/cli/arguments/sketch.go
index 6c167ad23dd..4e670bab6ac 100644
--- a/internal/cli/arguments/sketch.go
+++ b/internal/cli/arguments/sketch.go
@@ -16,9 +16,7 @@
 package arguments
 
 import (
-	"fmt"
-
-	"github.com/arduino/arduino-cli/arduino/sketch"
+	sk "github.com/arduino/arduino-cli/commands/sketch"
 	"github.com/arduino/arduino-cli/internal/cli/feedback"
 	"github.com/arduino/go-paths-helper"
 	"github.com/sirupsen/logrus"
@@ -38,18 +36,8 @@ func InitSketchPath(path string) (sketchPath *paths.Path) {
 		logrus.Infof("Reading sketch from dir: %s", wd)
 		sketchPath = wd
 	}
-	WarnDeprecatedFiles(sketchPath)
-	return sketchPath
-}
-
-// WarnDeprecatedFiles warns the user that a type of sketch files are deprecated
-func WarnDeprecatedFiles(sketchPath *paths.Path) {
-	// .pde files are still supported but deprecated, this warning urges the user to rename them
-	if files := sketch.CheckForPdeFiles(sketchPath); len(files) > 0 {
-		msg := tr("Sketches with .pde extension are deprecated, please rename the following files to .ino:")
-		for _, f := range files {
-			msg += fmt.Sprintf("\n - %s", f)
-		}
+	if msg := sk.WarnDeprecatedFiles(sketchPath); msg != "" {
 		feedback.Warning(msg)
 	}
+	return sketchPath
 }
diff --git a/internal/cli/sketch/archive.go b/internal/cli/sketch/archive.go
index 9410bb0d0c6..e21221aa3e7 100644
--- a/internal/cli/sketch/archive.go
+++ b/internal/cli/sketch/archive.go
@@ -21,7 +21,6 @@ import (
 	"os"
 
 	sk "github.com/arduino/arduino-cli/commands/sketch"
-	"github.com/arduino/arduino-cli/internal/cli/arguments"
 	"github.com/arduino/arduino-cli/internal/cli/feedback"
 	rpc "github.com/arduino/arduino-cli/rpc/cc/arduino/cli/commands/v1"
 	"github.com/arduino/go-paths-helper"
@@ -61,7 +60,9 @@ func runArchiveCommand(args []string, includeBuildDir bool, overwrite bool) {
 		sketchPath = paths.New(args[0])
 	}
 
-	arguments.WarnDeprecatedFiles(sketchPath)
+	if msg := sk.WarnDeprecatedFiles(sketchPath); msg != "" {
+		feedback.Warning(msg)
+	}
 
 	archivePath := ""
 	if len(args) == 2 {
diff --git a/internal/cli/upload/upload.go b/internal/cli/upload/upload.go
index 3c33f2675b0..c7a5eb8866a 100644
--- a/internal/cli/upload/upload.go
+++ b/internal/cli/upload/upload.go
@@ -86,8 +86,8 @@ func runUploadCommand(command *cobra.Command, args []string) {
 	}
 	sketchPath := arguments.InitSketchPath(path)
 
-	if importDir == "" && importFile == "" {
-		arguments.WarnDeprecatedFiles(sketchPath)
+	if msg := sk.WarnDeprecatedFiles(sketchPath); importDir == "" && importFile == "" && msg != "" {
+		feedback.Warning(msg)
 	}
 
 	sketch, err := sk.LoadSketch(context.Background(), &rpc.LoadSketchRequest{SketchPath: sketchPath.String()})