diff --git a/db/compaction_picker.cc b/db/compaction_picker.cc
index 9582b6a29..28cda9dac 100644
--- a/db/compaction_picker.cc
+++ b/db/compaction_picker.cc
@@ -551,7 +551,7 @@ Compaction* UniversalCompactionPicker::PickCompaction(Version* version) {
     return nullptr;
   }
   Version::FileSummaryStorage tmp;
-  Log(options_->info_log, "Universal: candidate files(%lu): %s\n",
+  Log(options_->info_log, "Universal: candidate files(%zu): %s\n",
       version->files_[level].size(),
       version->LevelFileSummary(&tmp, 0));
 
diff --git a/db/db_bench.cc b/db/db_bench.cc
index 18258fbb6..9e6ef70ca 100644
--- a/db/db_bench.cc
+++ b/db/db_bench.cc
@@ -1526,14 +1526,14 @@ class Benchmark {
       ++count;
       char* tab = std::find(linep, linep + bufferLen, columnSeparator);
       if (tab == linep + bufferLen) {
-        fprintf(stderr, "[Error] No Key delimiter TAB at line %ld\n", count);
+        fprintf(stderr, "[Error] No Key delimiter TAB at line %zu\n", count);
         continue;
       }
       Slice key(linep, tab - linep);
       tab++;
       char* endLine = std::find(tab, linep + bufferLen, lineSeparator);
       if (endLine  == linep + bufferLen) {
-        fprintf(stderr, "[Error] No ENTER at end of line # %ld\n", count);
+        fprintf(stderr, "[Error] No ENTER at end of line # %zu\n", count);
         continue;
       }
       Slice value(tab, endLine - tab);
diff --git a/util/options.cc b/util/options.cc
index 671f3d681..97fffdb18 100644
--- a/util/options.cc
+++ b/util/options.cc
@@ -164,11 +164,11 @@ Options::Dump(Logger* log) const
     Log(log,"            Options.num_levels: %d", num_levels);
     Log(log,"       Options.disableDataSync: %d", disableDataSync);
     Log(log,"             Options.use_fsync: %d", use_fsync);
-    Log(log,"     Options.max_log_file_size: %ld", max_log_file_size);
+    Log(log,"     Options.max_log_file_size: %zu", max_log_file_size);
     Log(log,"Options.max_manifest_file_size: %lu",
         (unsigned long)max_manifest_file_size);
-    Log(log,"     Options.log_file_time_to_roll: %ld", log_file_time_to_roll);
-    Log(log,"     Options.keep_log_file_num: %ld", keep_log_file_num);
+    Log(log,"     Options.log_file_time_to_roll: %zu", log_file_time_to_roll);
+    Log(log,"     Options.keep_log_file_num: %zu", keep_log_file_num);
     Log(log," Options.db_stats_log_interval: %d",
         db_stats_log_interval);
     Log(log,"       Options.allow_os_buffer: %d", allow_os_buffer);
@@ -224,7 +224,7 @@ Options::Dump(Logger* log) const
         table_cache_numshardbits);
     Log(log,"    Options.table_cache_remove_scan_count_limit: %d",
         table_cache_remove_scan_count_limit);
-    Log(log,"                       Options.arena_block_size: %ld",
+    Log(log,"                       Options.arena_block_size: %zu",
         arena_block_size);
     Log(log,"    Options.delete_obsolete_files_period_micros: %lu",
         (unsigned long)delete_obsolete_files_period_micros);
@@ -244,7 +244,7 @@ Options::Dump(Logger* log) const
         (unsigned long)WAL_ttl_seconds);
     Log(log,"                      Options.WAL_size_limit_MB: %lu",
         (unsigned long)WAL_size_limit_MB);
-    Log(log,"            Options.manifest_preallocation_size: %ld",
+    Log(log,"            Options.manifest_preallocation_size: %zu",
         manifest_preallocation_size);
     Log(log,"         Options.purge_redundant_kvs_while_flush: %d",
         purge_redundant_kvs_while_flush);