diff --git a/lemonldap-ng-common/lib/Lemonldap/NG/Common/Conf/Backends/CDBI.pm b/lemonldap-ng-common/lib/Lemonldap/NG/Common/Conf/Backends/CDBI.pm
index f24836b81..0e82a7260 100644
--- a/lemonldap-ng-common/lib/Lemonldap/NG/Common/Conf/Backends/CDBI.pm
+++ b/lemonldap-ng-common/lib/Lemonldap/NG/Common/Conf/Backends/CDBI.pm
@@ -28,7 +28,9 @@ sub store {
         $self->logError;
         return UNKNOWN_ERROR;
     }
-    unless ( $req->execute( $fields, $cfgNum ) ) {
+    my $execute;
+    eval { $execute = $req->execute( $fields, $cfgNum ); };
+    unless ($execute) {
         $self->logError;
         return UNKNOWN_ERROR;
     }
diff --git a/lemonldap-ng-common/lib/Lemonldap/NG/Common/Conf/Backends/RDBI.pm b/lemonldap-ng-common/lib/Lemonldap/NG/Common/Conf/Backends/RDBI.pm
index 5de127af1..f5c5c100a 100644
--- a/lemonldap-ng-common/lib/Lemonldap/NG/Common/Conf/Backends/RDBI.pm
+++ b/lemonldap-ng-common/lib/Lemonldap/NG/Common/Conf/Backends/RDBI.pm
@@ -38,7 +38,9 @@ sub store {
             @execValues = ( $k, $v, $cfgNum, $k );
         }
         else { @execValues = ( $cfgNum, $k, $v ); }
-        unless ( $req->execute(@execValues) ) {
+        my $execute;
+        eval { $execute = $req->execute(@execValues); };
+        unless ($execute) {
             $self->logError;
             $self->_dbh->do("ROLLBACK");
             return UNKNOWN_ERROR;