4 files changed, 4 insertions, 0 deletions
diff --git a/Bugzilla/DB/Schema/Mysql.pm b/Bugzilla/DB/Schema/Mysql.pm
index 9d634243f..0195fcb06 100644
--- a/Bugzilla/DB/Schema/Mysql.pm
+++ b/Bugzilla/DB/Schema/Mysql.pm
@@ -15,6 +15,7 @@ package Bugzilla::DB::Schema::Mysql;
 
 use 5.10.1;
 use strict;
+use warnings;
 
 use Bugzilla::Error;
 
diff --git a/Bugzilla/DB/Schema/Oracle.pm b/Bugzilla/DB/Schema/Oracle.pm
index 1554a0fe1..8fb5479b1 100644
--- a/Bugzilla/DB/Schema/Oracle.pm
+++ b/Bugzilla/DB/Schema/Oracle.pm
@@ -15,6 +15,7 @@ package Bugzilla::DB::Schema::Oracle;
 
 use 5.10.1;
 use strict;
+use warnings;
 
 use parent qw(Bugzilla::DB::Schema);
 use Carp qw(confess);
diff --git a/Bugzilla/DB/Schema/Pg.pm b/Bugzilla/DB/Schema/Pg.pm
index fa784ef7d..55a932272 100644
--- a/Bugzilla/DB/Schema/Pg.pm
+++ b/Bugzilla/DB/Schema/Pg.pm
@@ -15,6 +15,7 @@ package Bugzilla::DB::Schema::Pg;
 
 use 5.10.1;
 use strict;
+use warnings;
 
 use parent qw(Bugzilla::DB::Schema);
 use Storable qw(dclone);
diff --git a/Bugzilla/DB/Schema/Sqlite.pm b/Bugzilla/DB/Schema/Sqlite.pm
index b29d7da22..ccdbfd8aa 100644
--- a/Bugzilla/DB/Schema/Sqlite.pm
+++ b/Bugzilla/DB/Schema/Sqlite.pm
@@ -9,6 +9,7 @@ package Bugzilla::DB::Schema::Sqlite;
 
 use 5.10.1;
 use strict;
+use warnings;
 
 use parent qw(Bugzilla::DB::Schema);