2 files changed, 6 insertions, 2 deletions
diff --git a/activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb b/activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb
index 49ffd7ccf0..ca917a2eec 100644
--- a/activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb
+++ b/activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb
@@ -832,7 +832,10 @@ module ActiveRecord
       end
 
       def foreign_key_column_for(table_name) # :nodoc:
-        "#{table_name.to_s.singularize}_id"
+        prefix = Base.table_name_prefix
+        suffix = Base.table_name_suffix
+        name = table_name.to_s =~ /#{prefix}(.+)#{suffix}/ ? $1 : table_name.to_s
+        "#{name.singularize}_id"
       end
 
       def dump_schema_information #:nodoc:
diff --git a/activerecord/lib/active_record/migration.rb b/activerecord/lib/active_record/migration.rb
index d41b7e88d5..4cfda302ea 100644
--- a/activerecord/lib/active_record/migration.rb
+++ b/activerecord/lib/active_record/migration.rb
@@ -640,7 +640,8 @@ module ActiveRecord
         unless @connection.respond_to? :revert
           unless arguments.empty? || [:execute, :enable_extension, :disable_extension].include?(method)
             arguments[0] = proper_table_name(arguments.first, table_name_options)
-            if [:rename_table, :add_foreign_key].include?(method)
+            if [:rename_table, :add_foreign_key].include?(method) ||
+              (method == :remove_foreign_key && !arguments.second.is_a?(Hash))
               arguments[1] = proper_table_name(arguments.second, table_name_options)
             end
           end