diff --git a/pandas/_libs/parsers.pyx b/pandas/_libs/parsers.pyx
index a11bf370412d2..a6ffa685054fa 100644
--- a/pandas/_libs/parsers.pyx
+++ b/pandas/_libs/parsers.pyx
@@ -1924,7 +1924,7 @@ def _concatenate_chunks(list chunks):
     if warning_columns:
         warning_names = ','.join(warning_columns)
         warning_message = " ".join([
-            f"Columns ({warning_names}) have mixed types."
+            f"Columns ({warning_names}) have mixed types.",
             f"Specify dtype option on import or set low_memory=False."
           ])
         warnings.warn(warning_message, DtypeWarning, stacklevel=8)
diff --git a/pandas/tests/io/parser/common/test_chunksize.py b/pandas/tests/io/parser/common/test_chunksize.py
index 6d5aeaa713687..303174d9dbd1a 100644
--- a/pandas/tests/io/parser/common/test_chunksize.py
+++ b/pandas/tests/io/parser/common/test_chunksize.py
@@ -6,6 +6,7 @@
 
 import numpy as np
 import pytest
+import regex as re
 
 from pandas.errors import DtypeWarning
 
@@ -190,7 +191,11 @@ def test_warn_if_chunks_have_mismatched_type(all_parsers, request):
     buf = StringIO(data)
 
     try:
-        with tm.assert_produces_warning(warning_type):
+        msg = (
+            "Columns (0) have mixed types. Specify dtype option on import or "
+            "set low_memory=False."
+        )
+        with tm.assert_produces_warning(warning_type, match=re.escape(msg)):
             df = parser.read_csv(buf)
     except AssertionError as err:
         # 2021-02-21 this occasionally fails on the CI with an unexpected