diff --git a/src/read.rs b/src/read.rs
index d36e853c..2fe02dc7 100644
--- a/src/read.rs
+++ b/src/read.rs
@@ -397,19 +397,10 @@ impl<R: Read + Seek> ZipArchive<R> {
                 }
             };
         // It has both, so check if the zip64 footer is valid; if not, assume zip32
-        if archive_offset_64 < u32::MAX as u64 && archive_offset_64 != archive_offset_32
-            || archive_offset_32 != u32::MAX as u64
-        {
+        if directory_start_64 - archive_offset_64 != directory_start_32 - archive_offset_32 {
             return Ok((archive_offset_32, directory_start_32, number_of_files_32));
         }
-        if directory_start_64 < u32::MAX as u64 && directory_start_64 != directory_start_32
-            || directory_start_32 != u32::MAX as u64
-        {
-            return Ok((archive_offset_32, directory_start_32, number_of_files_32));
-        }
-        if number_of_files_64 < u32::MAX as usize && number_of_files_64 != number_of_files_32
-            || number_of_files_32 != u32::MAX as usize
-        {
+        if number_of_files_64 != number_of_files_32 && number_of_files_32 != u16::MAX as usize {
             return Ok((archive_offset_32, directory_start_32, number_of_files_32));
         }
         // It is, so we assume a zip64