diff --git a/htdocs/categories/viewcat.php b/htdocs/categories/viewcat.php
index 9231e215b7f..5912d63c7cf 100644
--- a/htdocs/categories/viewcat.php
+++ b/htdocs/categories/viewcat.php
@@ -795,7 +795,7 @@ if ($type == Categorie::TYPE_CONTACT) {
 	$permission = $user->rights->societe->creer;
 
 	$contacts = $object->getObjectsInCateg($type, 0, $limit, $offset);
-	if ($contacts < 0) {
+	if (is_numeric($contacts) && $contacts < 0) {
 		dol_print_error($db, $object->error, $object->errors);
 	} else {
 		// Form to add record into a category
diff --git a/htdocs/core/modules/societe/doc/doc_generic_odt.modules.php b/htdocs/core/modules/societe/doc/doc_generic_odt.modules.php
index 8b8069ff34f..6427a6a60a3 100644
--- a/htdocs/core/modules/societe/doc/doc_generic_odt.modules.php
+++ b/htdocs/core/modules/societe/doc/doc_generic_odt.modules.php
@@ -320,17 +320,22 @@ class doc_generic_odt extends ModeleThirdPartyDoc
 
 						foreach ($contact_arrray as $array_key => $contact_id) {
 							$res_contact = $contactstatic->fetch($contact_id);
-							$tmparray = $this->get_substitutionarray_contact($contactstatic, $outputlangs, 'contact');
-							foreach ($tmparray as $key => $val) {
-								try {
-									$listlines->setVars($key, $val, true, 'UTF-8');
-								} catch (OdfException $e) {
-									dol_syslog($e->getMessage(), LOG_INFO);
-								} catch (SegmentException $e) {
-									dol_syslog($e->getMessage(), LOG_INFO);
+							if ((int) $res_contact > 0) {
+								$tmparray = $this->get_substitutionarray_contact($contactstatic, $outputlangs, 'contact');
+								foreach ($tmparray as $key => $val) {
+									try {
+										$listlines->setVars($key, $val, true, 'UTF-8');
+									} catch (OdfException $e) {
+										dol_syslog($e->getMessage(), LOG_INFO);
+									} catch (SegmentException $e) {
+										dol_syslog($e->getMessage(), LOG_INFO);
+									}
 								}
+								$listlines->merge();
+							} else {
+								$this->error = $contactstatic->error;
+								dol_syslog($this->error, LOG_WARNING);
 							}
-							$listlines->merge();
 						}
 						$odfHandler->mergeSegment($listlines);
 					} catch (OdfException $e) {
diff --git a/htdocs/resource/class/html.formresource.class.php b/htdocs/resource/class/html.formresource.class.php
index a8b17665fa1..99916b8ed70 100644
--- a/htdocs/resource/class/html.formresource.class.php
+++ b/htdocs/resource/class/html.formresource.class.php
@@ -224,8 +224,9 @@ class FormResource
 					$value = ($maxlength ?dol_trunc($arraytypes['label'], $maxlength) : $arraytypes['label']);
 				} elseif ($format == 3) {
 					$value = $arraytypes['code'];
+				} elseif (empty($value)) {
+					print  '&nbsp;';
 				}
-				print $value ? $value : '&nbsp;';
 				print '</option>';
 			}
 		}