diff --git a/htdocs/comm/card.php b/htdocs/comm/card.php
index fc7378ecd93..e8e038f33eb 100644
--- a/htdocs/comm/card.php
+++ b/htdocs/comm/card.php
@@ -589,9 +589,9 @@ if ($object->id > 0) {
 		print '</tr></table>';
 		print '</td><td>';
 		if ($action == 'edittransportmode') {
-			$form->formSelectTransportMode($_SERVER['PHP_SELF'].'?socid='.$object->id, $object->transport_mode_id, 'transport_mode_id', 1);
+			$form->formSelectTransportMode($_SERVER['PHP_SELF'].'?socid='.$object->id, (!empty($object->transport_mode_id) ? $object->transport_mode_id : ''), 'transport_mode_id', 1);
 		} else {
-			$form->formSelectTransportMode($_SERVER['PHP_SELF'].'?socid='.$object->id, $object->transport_mode_id, 'none');
+			$form->formSelectTransportMode($_SERVER['PHP_SELF'].'?socid='.$object->id, (!empty($object->transport_mode_id) ? $object->transport_mode_id : ''), 'none');
 		}
 		print "</td>";
 		print '</tr>';
diff --git a/htdocs/core/class/commonobject.class.php b/htdocs/core/class/commonobject.class.php
index 33cfa7c8b32..9e312bee679 100644
--- a/htdocs/core/class/commonobject.class.php
+++ b/htdocs/core/class/commonobject.class.php
@@ -6397,7 +6397,7 @@ abstract class CommonObject
 		$param = array();
 		$param['options'] = array();
 		$reg = array();
-		$size = $this->fields[$key]['size'];
+		$size = !empty($this->fields[$key]['size']) ? $this->fields[$key]['size'] : 0;
 		// Because we work on extrafields
 		if (preg_match('/^(integer|link):(.*):(.*):(.*):(.*)/i', $val['type'], $reg)) {
 			$param['options'] = array($reg[2].':'.$reg[3].':'.$reg[4].':'.$reg[5] => 'N');
@@ -6430,21 +6430,21 @@ abstract class CommonObject
 		}
 
 		// Special case that force options and type ($type can be integer, varchar, ...)
-		if (is_array($this->fields[$key]['arrayofkeyval'])) {
+		if (!empty($this->fields[$key]['arrayofkeyval']) && is_array($this->fields[$key]['arrayofkeyval'])) {
 			$param['options'] = $this->fields[$key]['arrayofkeyval'];
 			$type = 'select';
 		}
 
 		$label = $this->fields[$key]['label'];
 		//$elementtype=$this->fields[$key]['elementtype'];	// Seems not used
-		$default = $this->fields[$key]['default'];
-		$computed = $this->fields[$key]['computed'];
-		$unique = $this->fields[$key]['unique'];
-		$required = $this->fields[$key]['required'];
-		$autofocusoncreate = $this->fields[$key]['autofocusoncreate'];
+		$default = (!empty($this->fields[$key]['default']) ? $this->fields[$key]['default'] : '');
+		$computed = (!empty($this->fields[$key]['computed']) ? $this->fields[$key]['computed'] : '');
+		$unique = (!empty($this->fields[$key]['unique']) ? $this->fields[$key]['unique'] : 0);
+		$required = (!empty($this->fields[$key]['required']) ? $this->fields[$key]['required'] : 0);
+		$autofocusoncreate = (!empty($this->fields[$key]['autofocusoncreate']) ? $this->fields[$key]['autofocusoncreate'] : 0);
 
-		$langfile = $this->fields[$key]['langfile'];
-		$list = $this->fields[$key]['list'];
+		$langfile = (!empty($this->fields[$key]['langfile']) ? $this->fields[$key]['langfile'] : '');
+		$list = (!empty($this->fields[$key]['list']) ? $this->fields[$key]['list'] : 0);
 		$hidden = (in_array(abs($this->fields[$key]['visible']), array(0, 2)) ? 1 : 0);
 
 		$objectid = $this->id;
diff --git a/htdocs/core/class/html.form.class.php b/htdocs/core/class/html.form.class.php
index dda350865af..0944918f815 100644
--- a/htdocs/core/class/html.form.class.php
+++ b/htdocs/core/class/html.form.class.php
@@ -8325,10 +8325,10 @@ class Form
 						$nophoto = 'company';
 					} else {
 						$nophoto = '/public/theme/common/user_anonymous.png';
-						if ($object->gender == 'man') {
+						if (!empty($object->gender) && $object->gender == 'man') {
 							$nophoto = '/public/theme/common/user_man.png';
 						}
-						if ($object->gender == 'woman') {
+						if (!empty($object->gender) && $object->gender == 'woman') {
 							$nophoto = '/public/theme/common/user_woman.png';
 						}
 					}
diff --git a/htdocs/langs/en_US/knowledgemanagement.lang b/htdocs/langs/en_US/knowledgemanagement.lang
index 269007e60f8..68f5cced76c 100644
--- a/htdocs/langs/en_US/knowledgemanagement.lang
+++ b/htdocs/langs/en_US/knowledgemanagement.lang
@@ -47,7 +47,7 @@ KnowledgeManagementArea = Knowledge Management
 # Menu
 #
 MenuKnowledgeRecord = Knowledge base
-ListOfArticles = List of articles
+ListKnowledgeRecord = List of articles
 NewKnowledgeRecord = New article
 ValidateReply = Validate solution
 KnowledgeRecords = Articles