diff --git a/django/core/validators.py b/django/core/validators.py
index 3e39b9db93..965f35cbab 100644
--- a/django/core/validators.py
+++ b/django/core/validators.py
@@ -510,9 +510,8 @@ def get_available_image_extensions():
         return [ext.lower()[1:] for ext in Image.EXTENSION]
 
 
-validate_image_file_extension = FileExtensionValidator(
-    allowed_extensions=get_available_image_extensions(),
-)
+def validate_image_file_extension(value):
+    return FileExtensionValidator(allowed_extensions=get_available_image_extensions())(value)
 
 
 @deconstructible