diff --git a/libtransmission/cache.cc b/libtransmission/cache.cc
index d0eabf6da..002048ca5 100644
--- a/libtransmission/cache.cc
+++ b/libtransmission/cache.cc
@@ -119,12 +119,12 @@ int Cache::write_contiguous(CIter const begin, CIter const end) const
     return {};
 }
 
-size_t Cache::get_max_blocks(int64_t max_bytes) noexcept
+size_t Cache::get_max_blocks(size_t max_bytes) noexcept
 {
-    return std::lldiv(max_bytes, tr_block_info::BlockSize).quot;
+    return max_bytes / tr_block_info::BlockSize;
 }
 
-int Cache::set_limit(int64_t new_limit)
+int Cache::set_limit(size_t new_limit)
 {
     max_bytes_ = new_limit;
     max_blocks_ = get_max_blocks(new_limit);
@@ -134,7 +134,7 @@ int Cache::set_limit(int64_t new_limit)
     return cache_trim();
 }
 
-Cache::Cache(tr_torrents& torrents, int64_t max_bytes)
+Cache::Cache(tr_torrents& torrents, size_t max_bytes)
     : torrents_{ torrents }
     , max_blocks_(get_max_blocks(max_bytes))
     , max_bytes_(max_bytes)
diff --git a/libtransmission/cache.h b/libtransmission/cache.h
index de521ce33..fb4489b04 100644
--- a/libtransmission/cache.h
+++ b/libtransmission/cache.h
@@ -30,9 +30,9 @@ class Cache
 public:
     using BlockData = small::max_size_vector<uint8_t, tr_block_info::BlockSize>;
 
-    Cache(tr_torrents& torrents, int64_t max_bytes);
+    Cache(tr_torrents& torrents, size_t max_bytes);
 
-    int set_limit(int64_t new_limit);
+    int set_limit(size_t new_limit);
 
     [[nodiscard]] constexpr auto get_limit() const noexcept
     {
@@ -88,7 +88,7 @@ private:
     // @return any error code from writeContiguous()
     [[nodiscard]] int cache_trim();
 
-    [[nodiscard]] static size_t get_max_blocks(int64_t max_bytes) noexcept;
+    [[nodiscard]] static size_t get_max_blocks(size_t max_bytes) noexcept;
 
     [[nodiscard]] CIter get_block(tr_torrent const* torrent, tr_block_info::Location const& loc) noexcept;