diff --git a/includes/classes/class.PlanetRessUpdate.php b/includes/classes/class.PlanetRessUpdate.php
index 9a2d4d2..a36193f 100644
--- a/includes/classes/class.PlanetRessUpdate.php
+++ b/includes/classes/class.PlanetRessUpdate.php
@@ -195,6 +195,10 @@ class ResourceUpdate
 				$DeuteriumTheorical			= ($this->ProductionTime * (($this->CONF['deuterium_basic_income'] * $this->CONF['resource_multiplier']) + $this->PLANET['deuterium_perhour']) / 3600);
 				$this->PLANET['deuterium']	= min($this->PLANET['deuterium'] + $DeuteriumTheorical, $MaxDeuteriumStorage);
 			}
+			elseif (0 > (($this->CONF['deuterium_basic_income'] * $this->CONF['resource_multiplier']) + $this->PLANET['deuterium_perhour'])) {
+				$DeuteriumTheorical			= ($this->ProductionTime * (($this->CONF['deuterium_basic_income'] * $this->CONF['resource_multiplier']) + $this->PLANET['deuterium_perhour']) / 3600);
+				$this->PLANET['deuterium']	= $this->PLANET['deuterium'] + $DeuteriumTheorical;
+			}
 		}
 		
 		$this->DEBUG->log("Add: Metal: ".pretty_number($MetalTheorical)." Crystal: ".pretty_number($CristalTheorical)." Deuterium: ".pretty_number($DeuteriumTheorical));