diff --git a/code/ryzom/client/src/interface_v3/action_handler_help.cpp b/code/ryzom/client/src/interface_v3/action_handler_help.cpp
index ac1480e0c..f15985706 100644
--- a/code/ryzom/client/src/interface_v3/action_handler_help.cpp
+++ b/code/ryzom/client/src/interface_v3/action_handler_help.cpp
@@ -1116,8 +1116,8 @@ class CHandlerHTMLSubmitForm : public IActionHandler
 			return;
 		}
 
-		sint32 x = pCaller->getEventX();
-		sint32 y = pCaller->getEventY();
+		sint32 x = pCaller ? pCaller->getEventX() : 0;
+		sint32 y = pCaller ? pCaller->getEventY() : 0;
 
 		CInterfaceElement *element = CWidgetManager::getInstance()->getElementFromId(container);
 		{
@@ -1127,6 +1127,10 @@ class CHandlerHTMLSubmitForm : public IActionHandler
 			{
 				groupHtml->submitForm(button, x, y);
 			}
+			else
+			{
+				nlwarning("CGroupHTML with id '%s' not found.", container.c_str());
+			}
 		}
 	}
 };