diff --git a/infolog/inc/class.infolog_so.inc.php b/infolog/inc/class.infolog_so.inc.php
index b242305170..0ba3c37515 100644
--- a/infolog/inc/class.infolog_so.inc.php
+++ b/infolog/inc/class.infolog_so.inc.php
@@ -578,6 +578,11 @@ class infolog_so
 				$to_write[$key] = $this->data[$key] = $val;   // update internal data
 			}
 		}
+		// If no price list use NULL not 0
+		if($to_write['pl_id'] == '')
+		{
+			$to_write['pl_id'] = NULL;
+		}
 		// writing no price as SQL NULL (required by postgres)
 		if ($to_write['info_price'] === '') $to_write['info_price'] = NULL;
 
diff --git a/infolog/inc/class.infolog_ui.inc.php b/infolog/inc/class.infolog_ui.inc.php
index a8cc627a9b..0f0c9e1380 100644
--- a/infolog/inc/class.infolog_ui.inc.php
+++ b/infolog/inc/class.infolog_ui.inc.php
@@ -2222,6 +2222,11 @@ class infolog_ui
 		{
 			unset($content['info_cat']);
 		}
+		// Don't send '0' if there is no price list
+		if($content['pl_id'] == '0')
+		{
+			unset($content['pl_id']);
+		}
 		$content['duration_format'] = $this->duration_format;
 		$content['hours_per_workday'] = $this->hours_per_workday;
 		if ($this->prefs['show_id']) $content['info_number'] = $info_id;