diff --git a/.rubocop.yml b/.rubocop.yml
index 71ea0a5b9..f1b8c95b6 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -226,6 +226,9 @@ Performance/BindCall:
 Performance/FlatMap:
   Enabled: true
 
+Performance/MapCompact:
+  Enabled: true
+
 Performance/RedundantMerge:
   Enabled: true
 
diff --git a/lib/active_record/connection_adapters/oracle_enhanced/schema_dumper.rb b/lib/active_record/connection_adapters/oracle_enhanced/schema_dumper.rb
index 52e796b64..45f8d4b1b 100644
--- a/lib/active_record/connection_adapters/oracle_enhanced/schema_dumper.rb
+++ b/lib/active_record/connection_adapters/oracle_enhanced/schema_dumper.rb
@@ -47,7 +47,7 @@ def synonyms(stream)
 
           def _indexes(table, stream)
             if (indexes = @connection.indexes(table)).any?
-              add_index_statements = indexes.map do |index|
+              add_index_statements = indexes.filter_map do |index|
                 case index.type
                 when nil
                   # do nothing here. see indexes_in_create
@@ -67,7 +67,7 @@ def _indexes(table, stream)
                   statement_parts = ["# unrecognized index #{index.name.inspect} with type #{index.type.inspect}"]
                 end
                 "  " + statement_parts.join(", ") unless statement_parts.empty?
-              end.compact
+              end
 
               return if add_index_statements.empty?