diff --git a/src/cli/config_export.go b/src/cli/config_export.go
index 67af7573..4cd756af 100644
--- a/src/cli/config_export.go
+++ b/src/cli/config_export.go
@@ -4,6 +4,7 @@ import (
 	"fmt"
 	"os"
 	"path/filepath"
+	"slices"
 	"strings"
 
 	"github.com/jandedobbeleer/oh-my-posh/src/engine"
@@ -49,6 +50,12 @@ Exports the ~/myconfig.omp.json config file to toml and prints the result to std
 			os.Exit(2)
 		}
 
+		formats := []string{"json", "jsonc", "toml", "tml", "yaml", "yml"}
+		if len(format) != 0 && !slices.Contains(formats, format) {
+			// usage error
+			os.Exit(2)
+		}
+
 		if len(output) == 0 {
 			fmt.Print(cfg.Export(format))
 			return