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-rw-r--r--django/forms/fields.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/django/forms/fields.py b/django/forms/fields.py
index c5a1ac8137..ab746e4971 100644
--- a/django/forms/fields.py
+++ b/django/forms/fields.py
@@ -530,7 +530,7 @@ class RegexField(CharField):
'Enter a valid value' is too generic for you.
"""
# error_message is just kept for backwards compatibility:
- if error_message:
+ if error_message is not None:
error_messages = kwargs.get('error_messages') or {}
error_messages['invalid'] = error_message
kwargs['error_messages'] = error_messages