diff --git a/src/mdbx.c b/src/mdbx.c
index 1b82fcfc..1d11303d 100644
--- a/src/mdbx.c
+++ b/src/mdbx.c
@@ -4160,7 +4160,7 @@ static int __cold mdbx_read_header(MDBX_env *env, MDBX_meta *meta) {
     STATIC_ASSERT(MIN_MAPSIZE < MAX_MAPSIZE);
     if (mapsize_max > MAX_MAPSIZE ||
         MAX_PAGENO < mdbx_roundup2((size_t)mapsize_max, env->me_os_psize) /
-                         (uint64_t)page.mp_meta.mm_psize) {
+                         (size_t)page.mp_meta.mm_psize) {
       const uint64_t used_bytes =
           page.mp_meta.mm_geo.next * (uint64_t)page.mp_meta.mm_psize;
       if (page.mp_meta.mm_geo.next - 1 > MAX_PAGENO ||
@@ -4762,13 +4762,13 @@ LIBMDBX_API int mdbx_env_set_geometry(MDBX_env *env, intptr_t size_lower,
 
     if (pagesize < 0) {
       pagesize = env->me_os_psize;
-      if (pagesize > MAX_PAGESIZE)
+      if ((uintptr_t)pagesize > MAX_PAGESIZE)
         pagesize = MAX_PAGESIZE;
-      mdbx_assert(env, pagesize >= MIN_PAGESIZE);
+      mdbx_assert(env, (uintptr_t)pagesize >= MIN_PAGESIZE);
     }
   }
 
-  if (pagesize < MIN_PAGESIZE || pagesize > MAX_PAGESIZE ||
+  if (pagesize < (intptr_t)MIN_PAGESIZE || pagesize > (intptr_t)MAX_PAGESIZE ||
       !mdbx_is_power2(pagesize)) {
     rc = MDBX_EINVAL;
     goto bailout;
@@ -4802,7 +4802,7 @@ LIBMDBX_API int mdbx_env_set_geometry(MDBX_env *env, intptr_t size_lower,
       size_upper = pagesize * MAX_PAGENO;
   }
 
-  if (unlikely(size_lower < MIN_MAPSIZE || size_lower > size_upper)) {
+  if (unlikely(size_lower < (intptr_t)MIN_MAPSIZE || size_lower > size_upper)) {
     rc = MDBX_EINVAL;
     goto bailout;
   }
@@ -5109,7 +5109,7 @@ static int __cold mdbx_setup_dxb(MDBX_env *env, int lck_rc) {
                 filesize_before_mmap,
                 bytes2pgno(env, (size_t)filesize_before_mmap));
     } else {
-      mdbx_notice("filesize mismatch (expect %" PRIuPTR "/%" PRIaPGNO
+      mdbx_notice("filesize mismatch (expect %" PRIuSIZE "/%" PRIaPGNO
                   ", have %" PRIu64 "/%" PRIaPGNO ")",
                   expected_bytes, bytes2pgno(env, expected_bytes),
                   filesize_before_mmap,
@@ -5125,11 +5125,11 @@ static int __cold mdbx_setup_dxb(MDBX_env *env, int lck_rc) {
       if (env->me_flags & MDBX_RDONLY) {
         mdbx_notice("ignore filesize mismatch in readonly-mode");
       } else {
-        mdbx_info("resize datafile to %" PRIu64 " bytes, %" PRIaPGNO " pages",
+        mdbx_info("resize datafile to %" PRIuSIZE " bytes, %" PRIaPGNO " pages",
                   expected_bytes, bytes2pgno(env, expected_bytes));
         err = mdbx_ftruncate(env->me_fd, expected_bytes);
         if (unlikely(err != MDBX_SUCCESS)) {
-          mdbx_error("error %d, while resize datafile to %" PRIu64
+          mdbx_error("error %d, while resize datafile to %" PRIuSIZE
                      " bytes, %" PRIaPGNO " pages",
                      rc, expected_bytes, bytes2pgno(env, expected_bytes));
           return err;