diff --git a/mecha/ast.py b/mecha/ast.py
index 3c5ca34..cbc3e9c 100644
--- a/mecha/ast.py
+++ b/mecha/ast.py
@@ -478,7 +478,7 @@ class AstPlayerName(AstLiteral):
     """Ast player name node."""
 
     parser = "player_name"
-    regex = re.compile(r"(?!@)[^*\[\]\(\)\{\}\s]+")
+    regex = re.compile(r"(?![@*[({])\S+")
 
 
 @dataclass(frozen=True, slots=True)
diff --git a/tests/resources/argument_examples.json b/tests/resources/argument_examples.json
index 33b43bd..24b7ba3 100644
--- a/tests/resources/argument_examples.json
+++ b/tests/resources/argument_examples.json
@@ -211,7 +211,7 @@
     },
     {
       "properties": { "type": "players", "amount": "single" },
-      "examples": ["#foo", "$foo", "%foo"]
+      "examples": ["#foo", "$foo", "%foo", "#exp(-0.1)*65536"]
     }
   ],
   "minecraft:entity_anchor": [
diff --git a/tests/snapshots/parse__argument_examples_minecraft_entity_5_3__0.txt b/tests/snapshots/parse__argument_examples_minecraft_entity_5_3__0.txt
new file mode 100644
index 0000000..a8d72d9
--- /dev/null
+++ b/tests/snapshots/parse__argument_examples_minecraft_entity_5_3__0.txt
@@ -0,0 +1,12 @@
+minecraft:entity 5 3
+---
+{'type': 'players', 'amount': 'single'}
+---
+#exp(-0.1)*65536
+---
+#exp(-0.1)*65536
+---
+<class 'mecha.ast.AstPlayerName'>
+  location: SourceLocation(pos=0, lineno=1, colno=1)
+  end_location: SourceLocation(pos=16, lineno=1, colno=17)
+  value: '#exp(-0.1)*65536'
\ No newline at end of file