diff --git a/src/PIL/ExifTags.py b/src/PIL/ExifTags.py
index 15e8010b6..925cafbe3 100644
--- a/src/PIL/ExifTags.py
+++ b/src/PIL/ExifTags.py
@@ -295,7 +295,8 @@ TAGS = {
 
 TAG_CODES = {
     # possibly incomplete
-    tag_name: tag_code for tag_code, tag_name in TAGS.items()
+    tag_name: tag_code
+    for tag_code, tag_name in TAGS.items()
 }
 """Maps tag names to EXIF tags."""