diff --git a/src/PIL/DdsImagePlugin.py b/src/PIL/DdsImagePlugin.py
index 467030114..581e60a3f 100644
--- a/src/PIL/DdsImagePlugin.py
+++ b/src/PIL/DdsImagePlugin.py
@@ -263,7 +263,7 @@ class D3DFMT(IntEnum):
     MULTI2_ARGB8 = i32(b"MET1")
 
 
-# Backward compat layer
+# Backward compatibility layer
 module = sys.modules[__name__]
 for item in DDSD:
     setattr(module, "DDSD_" + item.name, item.value)