diff --git a/src/ViewModels/CreateTag.cs b/src/ViewModels/CreateTag.cs
index 0a7d7440..498218cb 100644
--- a/src/ViewModels/CreateTag.cs
+++ b/src/ViewModels/CreateTag.cs
@@ -12,7 +12,7 @@ namespace SourceGit.ViewModels
         }
 
         [Required(ErrorMessage = "Tag name is required!")]
-        [RegularExpression(@"^[\w\-\.]+$", ErrorMessage = "Bad tag name format!")]
+        [RegularExpression(@"^[^/]{1}[\w\-\./]*$", ErrorMessage = "Bad tag name format!")]
         [CustomValidation(typeof(CreateTag), nameof(ValidateTagName))]
         public string TagName
         {