diff --git a/src/Esprima/Character.Generated.cs b/src/Esprima/Character.Generated.cs
index d0dfd3fb..10975cda 100644
--- a/src/Esprima/Character.Generated.cs
+++ b/src/Esprima/Character.Generated.cs
@@ -5,7 +5,7 @@ public static partial class Character
     // see test case CanGenerateMasks
     private static ReadOnlySpan<byte> _characterData => new byte[]
     {
-        0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 2, 6, 0, 0, 0,
+        0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 6, 0, 0, 0,
         0, 0, 0, 0, 0, 0, 0, 0, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 0, 0, 0, 0, 0, 0, 0, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
         6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 0, 6, 0, 0, 6, 0, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
         6, 6, 6, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
diff --git a/src/Esprima/Scanner.cs b/src/Esprima/Scanner.cs
index 72074560..28952be0 100644
--- a/src/Esprima/Scanner.cs
+++ b/src/Esprima/Scanner.cs
@@ -874,6 +874,7 @@ private Token ScanPunctuator()
 
                 break;
 
+            case '#':
             case ')':
             case ';':
             case ',':
diff --git a/test/Esprima.Tests/CharMaskGeneratorTest.cs b/test/Esprima.Tests/CharMaskGeneratorTest.cs
index 062c84cd..f40e02e3 100644
--- a/test/Esprima.Tests/CharMaskGeneratorTest.cs
+++ b/test/Esprima.Tests/CharMaskGeneratorTest.cs
@@ -87,7 +87,6 @@ public static bool IsIdentifierStart(char ch)
                ch >= 'A' && ch <= 'Z' ||
                ch >= 'a' && ch <= 'z' ||
                ch == '\\' ||
-               ch == '#' ||
                ch >= 0x80 && NonAsciiIdentifierStart.IsMatch(ParserExtensions.CharToString(ch));
     }