diff --git a/Lib/zipfile.py b/Lib/zipfile.py
index 5f2418734da..de06d820bd6 100644
--- a/Lib/zipfile.py
+++ b/Lib/zipfile.py
@@ -1132,7 +1132,7 @@ class ZipFile:
         self.fp.flush()
         if zinfo.flag_bits & 0x08:
             # Write CRC and file sizes after the file data
-            self.fp.write(struct.pack("<lLL", zinfo.CRC, zinfo.compress_size,
+            self.fp.write(struct.pack("<LLL", zinfo.CRC, zinfo.compress_size,
                   zinfo.file_size))
         self.filelist.append(zinfo)
         self.NameToInfo[zinfo.filename] = zinfo
diff --git a/Misc/NEWS b/Misc/NEWS
index 0f6f9018d32..32101b546e5 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -32,6 +32,9 @@ Library
 - Issue #6271: mmap tried to close invalid file handle (-1) when anonymous.
   (On Unix)
 
+- Issue #1202: zipfile module would cause a struct.error when attempting to
+  store files with a CRC32 > 2**31-1.
+
 Extension Modules
 -----------------