diff --git a/pandas/core/strings/accessor.py b/pandas/core/strings/accessor.py
index 31fc78c2feb36..05e1a36877e06 100644
--- a/pandas/core/strings/accessor.py
+++ b/pandas/core/strings/accessor.py
@@ -256,7 +256,7 @@ def _validate(data):
 
         if inferred_dtype not in allowed_types:
             raise AttributeError(
-                f"Can only use .str accessor with string values!, not {inferred_dtype}"
+                f"Can only use .str accessor with string values, not {inferred_dtype}"
             )
         return inferred_dtype