diff --git a/HISTORY.md b/HISTORY.md
index 20576489e..48b0c90be 100644
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -1671,7 +1671,7 @@ if set to something > 0 user will see 2 changes in iterators behavior 1) only ke
 * Added a new way to report QPS from db_bench (check out --report_file and --report_interval_seconds)
 * Added a cache for individual rows. See DBOptions::row_cache for more info.
 * Several new features on EventListener (see include/rocksdb/listener.h):
- - OnCompationCompleted() now returns per-compaction job statistics, defined in include/rocksdb/compaction_job_stats.h.
+ - OnCompactionCompleted() now returns per-compaction job statistics, defined in include/rocksdb/compaction_job_stats.h.
  - Added OnTableFileCreated() and OnTableFileDeleted().
 * Add compaction_options_universal.enable_trivial_move to true, to allow trivial move while performing universal compaction. Trivial move will happen only when all the input files are non overlapping.
 
diff --git a/tools/db_crashtest.py b/tools/db_crashtest.py
index 0252eda39..96ec137b0 100644
--- a/tools/db_crashtest.py
+++ b/tools/db_crashtest.py
@@ -131,7 +131,7 @@ default_params = {
     # Sync mode might make test runs slower so running it in a smaller chance
     "sync" : lambda : random.choice(
         [1 if t == 0 else 0 for t in range(0, 20)]),
-    # Disable compation_readahead_size because the test is not passing.
+    # Disable compaction_readahead_size because the test is not passing.
     #"compaction_readahead_size" : lambda : random.choice(
     #    [0, 0, 1024 * 1024]),
     "db_write_buffer_size" : lambda: random.choice(
diff --git a/utilities/option_change_migration/option_change_migration.cc b/utilities/option_change_migration/option_change_migration.cc
index 5058c968a..8b5351624 100644
--- a/utilities/option_change_migration/option_change_migration.cc
+++ b/utilities/option_change_migration/option_change_migration.cc
@@ -140,7 +140,7 @@ Status MigrateToLevelBase(std::string dbname, const Options& old_opts,
 Status OptionChangeMigration(std::string dbname, const Options& old_opts,
                              const Options& new_opts) {
   if (old_opts.compaction_style == CompactionStyle::kCompactionStyleFIFO) {
-    // LSM generated by FIFO compation can be opened by any compaction.
+    // LSM generated by FIFO compaction can be opened by any compaction.
     return Status::OK();
   } else if (new_opts.compaction_style ==
              CompactionStyle::kCompactionStyleUniversal) {