diff --git a/src/PIL/BlpImagePlugin.py b/src/PIL/BlpImagePlugin.py
index c229cc9ce..355795cb9 100644
--- a/src/PIL/BlpImagePlugin.py
+++ b/src/PIL/BlpImagePlugin.py
@@ -40,6 +40,11 @@ from typing import IO
 
 from . import Image, ImageFile
 
+branches = {
+            "1": False,
+            "2": False,
+    }
+
 class Format(IntEnum):
     JPEG = 0
 
@@ -276,22 +281,20 @@ class BlpImageFile(ImageFile.ImageFile):
 
 
 class _BLPBaseDecoder(ImageFile.PyDecoder):
-
+    branches = {
+            "1": False,
+            "2": False,
+    }
 
     _pulls_fd = True
 
     def decode(self, buffer: bytes) -> tuple[int, int]:
-        branches = {
-            "1": False,
-            "2": False,
-        }
-
         try:
-            branches["1"] = True;
+            branches["1"] = True
             self._read_blp_header()
             self._load()
         except struct.error as e:
-            branches["2"] = True;
+            branches["2"] = True
             msg = "Truncated BLP file"
             raise OSError(msg) from e
         return -1, 0
diff --git a/src/PIL/IcnsImagePlugin.py b/src/PIL/IcnsImagePlugin.py
index f90faf397..223a0df45 100644
--- a/src/PIL/IcnsImagePlugin.py
+++ b/src/PIL/IcnsImagePlugin.py
@@ -48,11 +48,11 @@ def read_32t(fobj, start_length, size):
     fobj.seek(start)
     sig = fobj.read(4)
     if sig != b"\x00\x00\x00\x00":
-        branches["1"] = True;
+        branches["1"] = True
         msg = "Unknown signature, expecting 0x00000000"
         raise SyntaxError(msg)
     else:
-        branches["2"] = True;
+        branches["2"] = True
     return read_32(fobj, (start + 4, length - 4), size)