diff --git a/internal/commands/messages/html_analysis.go b/internal/commands/messages/html_analysis.go
index a79e582..3205a39 100644
--- a/internal/commands/messages/html_analysis.go
+++ b/internal/commands/messages/html_analysis.go
@@ -44,8 +44,7 @@ func NewCmdHTMLAnalysis(f *cmdutil.Factory) *cobra.Command {
 				return err
 			}
 
-			format := cmdutil.GetOutputFormat()
-			return output.Print(f.IOStreams.Out, format, result, nil)
+			return output.Print(f.IOStreams.Out, output.FormatJSON, result, nil)
 		},
 	}
 
diff --git a/internal/commands/messages/messages_extended_test.go b/internal/commands/messages/messages_extended_test.go
index 8a79a82..9ffc05f 100644
--- a/internal/commands/messages/messages_extended_test.go
+++ b/internal/commands/messages/messages_extended_test.go
@@ -8,7 +8,6 @@ import (
 	"testing"
 
 	"github.com/mailtrap/mailtrap-cli/internal/commands/messages"
-	"github.com/spf13/viper"
 )
 
 func TestMessagesUpdate(t *testing.T) {
@@ -152,9 +151,6 @@ func TestMessagesHTMLAnalysis(t *testing.T) {
 	})
 	defer cleanup()
 
-	// html-analysis uses GetOutputFormat, so set output to json to ensure clean output
-	viper.Set("output", "json")
-
 	cmd := messages.NewCmdMessages(f)
 	cmd.SetArgs([]string{"html-analysis", "--sandbox-id", "1", "--id", "1"})
 	cmd.SetOut(buf)