diff --git a/sklearn2pmml/preprocessing/tests/__init__.py b/sklearn2pmml/preprocessing/tests/__init__.py
index 648e080..48053f5 100644
--- a/sklearn2pmml/preprocessing/tests/__init__.py
+++ b/sklearn2pmml/preprocessing/tests/__init__.py
@@ -405,6 +405,13 @@ def test_func_transform(self):
 		X = numpy.array([[1.5], [0.0], [-3.0]])
 		self.assertEqual([[1], [0], [-1]], transformer.fit_transform(X).tolist())
 
+	def test_regex_transform(self):
+		transformer = ExpressionTransformer("pcre2.substitute(r'B+', r'c', X[0])")
+		X = numpy.array([["ABBA"]])
+		self.assertEqual([["AcA"]], transformer.fit_transform(X).tolist())
+		transformer = ExpressionTransformer("re.sub(r'B+', r'c', X[0])")
+		self.assertEqual([["AcA"]], transformer.fit_transform(X).tolist())
+
 	def test_sequence_transform(self):
 		X = DataFrame([[None], [1], [None]], columns = ["a"])
 		mapper = DataFrameMapper([
diff --git a/sklearn2pmml/util/__init__.py b/sklearn2pmml/util/__init__.py
index 36f349a..bb84f76 100644
--- a/sklearn2pmml/util/__init__.py
+++ b/sklearn2pmml/util/__init__.py
@@ -181,7 +181,7 @@ def to_expr(expr):
 	else:
 		raise TypeError()
 
-def to_expr_func(expr, modules = ["math", "re", "pcre", "numpy", "pandas", "scipy"]):
+def to_expr_func(expr, modules = ["math", "re", "pcre", "pcre2", "numpy", "pandas", "scipy"]):
 	env = dict()
 
 	if isinstance(expr, str):