diff --git a/src/backend/utils/adt/pg_locale_icu.c b/src/backend/utils/adt/pg_locale_icu.c
index 352b4c3885f..5ad05fcd016 100644
--- a/src/backend/utils/adt/pg_locale_icu.c
+++ b/src/backend/utils/adt/pg_locale_icu.c
@@ -587,7 +587,7 @@ make_icu_collator(const char *iculocstr, const char *icurules)
 
 		status = U_ZERO_ERROR;
 		collator_all_rules = ucol_openRules(all_rules, u_strlen(all_rules),
-											UCOL_DEFAULT, UCOL_DEFAULT_STRENGTH,
+											UCOL_DEFAULT, UCOL_DEFAULT,
 											NULL, &status);
 		if (U_FAILURE(status))
 		{
diff --git a/src/test/regress/expected/collate.icu.utf8.out b/src/test/regress/expected/collate.icu.utf8.out
index 1325e123877..d170e7da066 100644
--- a/src/test/regress/expected/collate.icu.utf8.out
+++ b/src/test/regress/expected/collate.icu.utf8.out
@@ -1297,6 +1297,14 @@ DROP TABLE test7;
 CREATE COLLATION testcoll_rulesx (provider = icu, locale = '', rules = '!!wrong!!');
 NOTICE:  using standard form "und" for ICU locale ""
 ERROR:  could not open collator for locale "und" with rules "!!wrong!!": U_INVALID_FORMAT_ERROR
+-- strength specified in the rules
+CREATE COLLATION strength_in_rule (provider = icu, locale = 'und', deterministic = false, rules = '[strength 1]');
+SELECT 'a' = 'à' COLLATE strength_in_rule;  -- true because of the rule
+ ?column? 
+----------
+ t
+(1 row)
+
 -- nondeterministic collations
 CREATE COLLATION ctest_det (provider = icu, locale = '', deterministic = true);
 NOTICE:  using standard form "und" for ICU locale ""
diff --git a/src/test/regress/sql/collate.icu.utf8.sql b/src/test/regress/sql/collate.icu.utf8.sql
index b6c54503d21..8f0f973f5fa 100644
--- a/src/test/regress/sql/collate.icu.utf8.sql
+++ b/src/test/regress/sql/collate.icu.utf8.sql
@@ -513,6 +513,10 @@ DROP TABLE test7;
 
 CREATE COLLATION testcoll_rulesx (provider = icu, locale = '', rules = '!!wrong!!');
 
+-- strength specified in the rules
+CREATE COLLATION strength_in_rule (provider = icu, locale = 'und', deterministic = false, rules = '[strength 1]');
+SELECT 'a' = 'à' COLLATE strength_in_rule;  -- true because of the rule
+
 
 -- nondeterministic collations