diff --git a/miniz_zip.c b/miniz_zip.c
index 57e5fad..235cab6 100644
--- a/miniz_zip.c
+++ b/miniz_zip.c
@@ -723,7 +723,7 @@ static mz_bool mz_zip_reader_read_central_dir(mz_zip_archive *pZip, mz_uint flag
     if (((num_this_disk | cdir_disk_index) != 0) && ((num_this_disk != 1) || (cdir_disk_index != 1)))
         return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_MULTIDISK);
 
-    if (cdir_size < pZip->m_total_files * MZ_ZIP_CENTRAL_DIR_HEADER_SIZE)
+    if (cdir_size < (mz_uint64)pZip->m_total_files * MZ_ZIP_CENTRAL_DIR_HEADER_SIZE)
         return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED);
 
     if ((cdir_ofs + (mz_uint64)cdir_size) > pZip->m_archive_size)