diff --git a/dbms/src/Core/Settings.h b/dbms/src/Core/Settings.h
index 7bb7c9e5dba..34b051c0d86 100644
--- a/dbms/src/Core/Settings.h
+++ b/dbms/src/Core/Settings.h
@@ -292,7 +292,7 @@ struct Settings : public SettingsCollection<Settings>
     M(SettingOverflowMode, join_overflow_mode, OverflowMode::THROW, "What to do when the limit is exceeded.") \
     M(SettingBool, join_any_take_last_row, false, "When disabled (default) ANY JOIN will take the first found row for a key. When enabled, it will take the last row seen if there are multiple rows for the same key.") \
     M(SettingBool, partial_merge_join, false, "Use partial merge join instead of hash join for LEFT and INNER JOINs.") \
-    M(SettingBool, partial_merge_join_optimisations, false, "Enable optimisations in partial merge join") \
+    M(SettingBool, partial_merge_join_optimizations, false, "Enable optimisations in partial merge join") \
     M(SettingUInt64, partial_merge_join_rows_in_right_blocks, 10000, "Split right-hand joining data in blocks of specified size.") \
     \
     M(SettingUInt64, max_rows_to_transfer, 0, "Maximum size (in rows) of the transmitted external table obtained when the GLOBAL IN/JOIN section is executed.") \
diff --git a/dbms/src/Interpreters/AnalyzedJoin.cpp b/dbms/src/Interpreters/AnalyzedJoin.cpp
index cdf047fc5e5..072cf352831 100644
--- a/dbms/src/Interpreters/AnalyzedJoin.cpp
+++ b/dbms/src/Interpreters/AnalyzedJoin.cpp
@@ -27,7 +27,7 @@ AnalyzedJoin::AnalyzedJoin(const Settings & settings)
     : size_limits(SizeLimits{settings.max_rows_in_join, settings.max_bytes_in_join, settings.join_overflow_mode})
     , join_use_nulls(settings.join_use_nulls)
     , partial_merge_join(settings.partial_merge_join)
-    , partial_merge_join_optimisations(settings.partial_merge_join_optimisations)
+    , partial_merge_join_optimizations(settings.partial_merge_join_optimizations)
     , partial_merge_join_rows_in_right_blocks(settings.partial_merge_join_rows_in_right_blocks)
 {}
 
diff --git a/dbms/src/Interpreters/AnalyzedJoin.h b/dbms/src/Interpreters/AnalyzedJoin.h
index f9d0d9d0f79..2145912c202 100644
--- a/dbms/src/Interpreters/AnalyzedJoin.h
+++ b/dbms/src/Interpreters/AnalyzedJoin.h
@@ -40,7 +40,7 @@ class AnalyzedJoin
     const SizeLimits size_limits;
     const bool join_use_nulls;
     const bool partial_merge_join;
-    const bool partial_merge_join_optimisations;
+    const bool partial_merge_join_optimizations;
     const size_t partial_merge_join_rows_in_right_blocks;
 
     Names key_names_left;
@@ -68,7 +68,7 @@ public:
         : size_limits(limits)
         , join_use_nulls(use_nulls)
         , partial_merge_join(false)
-        , partial_merge_join_optimisations(false)
+        , partial_merge_join_optimizations(false)
         , partial_merge_join_rows_in_right_blocks(0)
         , key_names_right(key_names_right_)
     {
@@ -83,7 +83,7 @@ public:
     bool forceNullableRight() const { return join_use_nulls && isLeftOrFull(table_join.kind); }
     bool forceNullableLeft() const { return join_use_nulls && isRightOrFull(table_join.kind); }
     size_t maxRowsInRightBlock() const { return partial_merge_join_rows_in_right_blocks; }
-    bool enablePartialMergeJoinOptimisations() const { return partial_merge_join_optimisations; }
+    bool enablePartialMergeJoinOptimizations() const { return partial_merge_join_optimizations; }
 
     void addUsingKey(const ASTPtr & ast);
     void addOnKeys(ASTPtr & left_table_ast, ASTPtr & right_table_ast);
diff --git a/dbms/src/Interpreters/MergeJoin.cpp b/dbms/src/Interpreters/MergeJoin.cpp
index 2464500957b..430ff6693ab 100644
--- a/dbms/src/Interpreters/MergeJoin.cpp
+++ b/dbms/src/Interpreters/MergeJoin.cpp
@@ -330,7 +330,7 @@ MergeJoin::MergeJoin(std::shared_ptr<AnalyzedJoin> table_join_, const Block & ri
     , is_all(table_join->strictness() == ASTTableJoin::Strictness::All)
     , is_inner(isInner(table_join->kind()))
     , is_left(isLeft(table_join->kind()))
-    , skip_not_intersected(table_join->enablePartialMergeJoinOptimisations())
+    , skip_not_intersected(table_join->enablePartialMergeJoinOptimizations())
 {
     if (!isLeft(table_join->kind()) && !isInner(table_join->kind()))
         throw Exception("Partial merge supported for LEFT and INNER JOINs only", ErrorCodes::NOT_IMPLEMENTED);
diff --git a/dbms/tests/queries/0_stateless/01010_pmj_skip_blocks.sql b/dbms/tests/queries/0_stateless/01010_pmj_skip_blocks.sql
index 3f2cbdd0cc4..3554aabe5f3 100644
--- a/dbms/tests/queries/0_stateless/01010_pmj_skip_blocks.sql
+++ b/dbms/tests/queries/0_stateless/01010_pmj_skip_blocks.sql
@@ -7,7 +7,7 @@ CREATE TABLE t1 (x UInt32, y UInt64) engine = MergeTree ORDER BY (x,y);
 CREATE TABLE t2 (x UInt32, y UInt64) engine = MergeTree ORDER BY (x,y);
 
 SET partial_merge_join = 1;
-SET partial_merge_join_optimisations = 1;
+SET partial_merge_join_optimizations = 1;
 SET partial_merge_join_rows_in_right_blocks = 2;
 SET any_join_distinct_right_table_keys = 1;