diff --git a/src/Shared/HandyControl_Shared/Tools/RegexPatterns.cs b/src/Shared/HandyControl_Shared/Tools/RegexPatterns.cs
index b01ecb95f..09925900b 100644
--- a/src/Shared/HandyControl_Shared/Tools/RegexPatterns.cs
+++ b/src/Shared/HandyControl_Shared/Tools/RegexPatterns.cs
@@ -99,7 +99,7 @@ public sealed class RegexPatterns
     /// <summary>
     ///     负整数正则匹配
     /// </summary>
-    public const string NIntPattern = @"^-[1-9]\d*$ ";
+    public const string NIntPattern = @"^-[1-9]\d*$";
 
     /// <summary>
     ///     整数正则匹配