diff --git a/bin/pt-online-schema-change b/bin/pt-online-schema-change
index 0b508383..bfb5f830 100755
--- a/bin/pt-online-schema-change
+++ b/bin/pt-online-schema-change
@@ -9815,7 +9815,7 @@ sub find_child_tables {
    
    my $sql = "SELECT table_schema, table_name "
            . "FROM information_schema.key_column_usage "
-           . "WHERE constraint_schema='$tbl->{db}' "
+           . "WHERE referenced_table_schema='$tbl->{db}' "
            . "AND referenced_table_name='$tbl->{tbl}'";
    PTDEBUG && _d($sql);
    my $rows = $cxn->dbh()->selectall_arrayref($sql);
diff --git a/t/pt-online-schema-change/bug-1315130.t b/t/pt-online-schema-change/bug-1315130.t
new file mode 100644
index 00000000..34cf7376
--- /dev/null
+++ b/t/pt-online-schema-change/bug-1315130.t
@@ -0,0 +1,78 @@
+#!/usr/bin/env perl
+
+BEGIN {
+   die "The PERCONA_TOOLKIT_BRANCH environment variable is not set.\n"
+      unless $ENV{PERCONA_TOOLKIT_BRANCH} && -d $ENV{PERCONA_TOOLKIT_BRANCH};
+   unshift @INC, "$ENV{PERCONA_TOOLKIT_BRANCH}/lib";
+};
+
+use strict;
+use warnings FATAL => 'all';
+use English qw(-no_match_vars);
+use Test::More;
+use Time::HiRes qw(sleep);
+
+$ENV{PTTEST_FAKE_TS} = 1;
+$ENV{PERCONA_TOOLKIT_TEST_USE_DSN_NAMES} = 1;
+
+use PerconaTest;
+use Sandbox;
+require "$trunk/bin/pt-online-schema-change";
+require VersionParser;
+
+use Data::Dumper;
+$Data::Dumper::Indent    = 1;
+$Data::Dumper::Sortkeys  = 1;
+$Data::Dumper::Quotekeys = 0;
+
+my $dp         = new DSNParser(opts=>$dsn_opts);
+my $sb         = new Sandbox(basedir => '/tmp', DSNParser => $dp);
+my $master_dbh = $sb->get_dbh_for('master');
+my $slave_dbh  = $sb->get_dbh_for('slave1');
+
+if ( !$master_dbh ) {
+   plan skip_all => 'Cannot connect to sandbox master';
+}
+elsif ( !$slave_dbh ) {
+   plan skip_all => 'Cannot connect to sandbox slave';
+}
+
+my $q      = new Quoter();
+my $tp     = new TableParser(Quoter => $q);
+my @args   = qw(--set-vars innodb_lock_wait_timeout=3);
+my $output = "";
+my $dsn    = "h=127.1,P=12345,u=msandbox,p=msandbox";
+my $exit   = 0;
+my $sample = "t/pt-online-schema-change/samples";
+my $rows;
+
+
+# #############################################################################
+# Issue 1315130
+# Failed to detect child tables in other schema, and falsely identified
+# child tables in own schema
+# #############################################################################
+
+$sb->load_file('master', "$sample/bug-1315130_cleanup.sql");
+$sb->load_file('master', "$sample/bug-1315130.sql");
+($output, $exit) = full_output(
+   sub { pt_online_schema_change::main(@args, "$dsn,D=bug_1315130_a,t=parent_table",
+         '--dry-run', 
+         '--alter', "add column c varchar(16)",
+         '--alter-foreign-keys-method', 'auto'),
+      },
+);
+print STDERR "[$output]\n";
+   like(
+         $output,
+         qr/Child tables:\s*`bug_1315130_a`\.`child_table_in_same_schema` \(approx\. 1 rows\)\s*`bug_1315130_b`\.`child_table_in_second_schema` \(approx\. 1 rows\)[^`]*?Will/s,
+         "Correctly identify child tables from other schemas and ignores tables from same schema referencig same named parent in other schema.",
+   );
+# clear databases with their foreign keys
+$sb->load_file('master', "$sample/bug-1315130_cleanup.sql");  
+
+# Done.
+# #############################################################################
+$sb->wipe_clean($master_dbh);
+ok($sb->ok(), "Sandbox servers") or BAIL_OUT(__FILE__ . " broke the sandbox");
+done_testing;