Index: pol-core/pol/uoscrobj.cpp
===================================================================
--- pol-core/pol/uoscrobj.cpp	(revision 625)
+++ pol-core/pol/uoscrobj.cpp	(working copy)
@@ -3252,6 +3252,10 @@
 	switch(id)
 	{
 		case MBR_HP:
+			if(value < 0) {
+				value = 0;
+			}
+
 			hp_ = static_cast<unsigned short>(value);
 			if (this->isa(CLASS_ARMOR))
 			{