diff --git a/src/Functions/parseDateTime.cpp b/src/Functions/parseDateTime.cpp
index 6a7a6010d4b..553e993a806 100644
--- a/src/Functions/parseDateTime.cpp
+++ b/src/Functions/parseDateTime.cpp
@@ -1856,7 +1856,7 @@ REGISTER_FUNCTION(ParseDateTime)
     factory.registerAlias("TO_UNIXTIME", FunctionParseDateTime::name);
     factory.registerFunction<FunctionParseDateTimeOrZero>();
     factory.registerFunction<FunctionParseDateTimeOrNull>();
-    factory.registerAlias("str_to_date", FunctionParseDateTimeOrNull::name);
+    factory.registerAlias("str_to_date", FunctionParseDateTimeOrNull::name, FunctionFactory::CaseInsensitive);
 
     factory.registerFunction<FunctionParseDateTimeInJodaSyntax>();
     factory.registerFunction<FunctionParseDateTimeInJodaSyntaxOrZero>();
diff --git a/tests/queries/0_stateless/02668_parse_datetime.reference b/tests/queries/0_stateless/02668_parse_datetime.reference
index f39655c6a41..afa3d0eb962 100644
--- a/tests/queries/0_stateless/02668_parse_datetime.reference
+++ b/tests/queries/0_stateless/02668_parse_datetime.reference
@@ -208,5 +208,7 @@ select parseDateTimeOrNull('10:04:11 invalid 03-07-2019', '%s:%i:%H %d-%m-%Y', '
 1
 select str_to_date('10:04:11 03-07-2019', '%s:%i:%H %d-%m-%Y', 'UTC') = toDateTime('2019-07-03 11:04:10', 'UTC');
 1
+select sTr_To_DaTe('10:04:11 03-07-2019', '%s:%i:%H %d-%m-%Y', 'UTC') = toDateTime('2019-07-03 11:04:10', 'UTC');
+1
 select str_to_date('10:04:11 invalid 03-07-2019', '%s:%i:%H %d-%m-%Y', 'UTC') IS NULL;
 1
diff --git a/tests/queries/0_stateless/02668_parse_datetime.sql b/tests/queries/0_stateless/02668_parse_datetime.sql
index 757c4fe2efe..51c2fda8428 100644
--- a/tests/queries/0_stateless/02668_parse_datetime.sql
+++ b/tests/queries/0_stateless/02668_parse_datetime.sql
@@ -138,6 +138,7 @@ select parseDateTimeOrZero('10:04:11 invalid 03-07-2019', '%s:%i:%H %d-%m-%Y', '
 select parseDateTimeOrNull('10:04:11 03-07-2019', '%s:%i:%H %d-%m-%Y', 'UTC') = toDateTime('2019-07-03 11:04:10', 'UTC');
 select parseDateTimeOrNull('10:04:11 invalid 03-07-2019', '%s:%i:%H %d-%m-%Y', 'UTC') IS NULL;
 select str_to_date('10:04:11 03-07-2019', '%s:%i:%H %d-%m-%Y', 'UTC') = toDateTime('2019-07-03 11:04:10', 'UTC');
+select sTr_To_DaTe('10:04:11 03-07-2019', '%s:%i:%H %d-%m-%Y', 'UTC') = toDateTime('2019-07-03 11:04:10', 'UTC');
 select str_to_date('10:04:11 invalid 03-07-2019', '%s:%i:%H %d-%m-%Y', 'UTC') IS NULL;
 
 -- { echoOff }