diff --git a/reserve/modrequest.pl b/reserve/modrequest.pl
index 7774ec58b8..a88b67c115 100755
--- a/reserve/modrequest.pl
+++ b/reserve/modrequest.pl
@@ -23,6 +23,7 @@
 # Suite 330, Boston, MA  02111-1307 USA
 
 use strict;
+use warnings;
 use CGI;
 use C4::Output;
 use C4::Reserves;
diff --git a/reserve/placerequest.pl b/reserve/placerequest.pl
index 36379f8b96..96fdb7cf63 100755
--- a/reserve/placerequest.pl
+++ b/reserve/placerequest.pl
@@ -22,6 +22,7 @@
 # Suite 330, Boston, MA  02111-1307 USA
 
 use strict;
+use warnings;
 use C4::Biblio;
 use C4::Items;
 use CGI;
diff --git a/reserve/renewscript.pl b/reserve/renewscript.pl
index f4b2a6523c..2d269296f3 100755
--- a/reserve/renewscript.pl
+++ b/reserve/renewscript.pl
@@ -21,12 +21,12 @@
 # You should have received a copy of the GNU General Public License along with
 # Koha; if not, write to the Free Software Foundation, Inc., 59 Temple Place,
 # Suite 330, Boston, MA  02111-1307 USA
-
+use strict;
+use warnings;
 use CGI;
 use C4::Circulation;
 use C4::Auth;
 use C4::Dates qw/format_date_in_iso/;
-use strict;
 my $input = new CGI;
 
 #Set Up User_env
diff --git a/reserve/request.pl b/reserve/request.pl
index dcb6cae272..65d749f1b9 100755
--- a/reserve/request.pl
+++ b/reserve/request.pl
@@ -26,6 +26,7 @@ =head1 request.pl
 =cut
 
 use strict;
+use warnings;
 use C4::Branch; # GetBranches get_branchinfos_of
 use CGI;
 use List::MoreUtils qw/uniq/;