diff --git a/src/PIL/ImageFile.py b/src/PIL/ImageFile.py
index a1d98bd5103..4bac877949a 100644
--- a/src/PIL/ImageFile.py
+++ b/src/PIL/ImageFile.py
@@ -61,7 +61,7 @@
 
 SAFEBLOCK = 1024 * 1024
 
-LOAD_TRUNCATED_IMAGES = False
+LOAD_TRUNCATED_IMAGES: bool = False
 """Whether or not to load truncated image files. User code may change this."""
 
 ERRORS = {