diff --git a/code/ryzom/client/src/interface_v3/group_in_scene.cpp b/code/ryzom/client/src/interface_v3/group_in_scene.cpp
index fccf2e9e6..b547f7fb0 100644
--- a/code/ryzom/client/src/interface_v3/group_in_scene.cpp
+++ b/code/ryzom/client/src/interface_v3/group_in_scene.cpp
@@ -86,8 +86,10 @@ void CGroupInScene::computeWindowPos(sint32 &newX, sint32 &newY, CVector &newPro
 			tmp = pVR.getFrustum().projectZ (tmp);
 
 			// Get the width and height
-			tmp.x *= (float)CViewRenderer::getInstance()->getDriver()->getWindowWidth();
-			tmp.y *= (float)CViewRenderer::getInstance()->getDriver()->getWindowHeight();
+			uint32 width, height;
+			CViewRenderer::getInstance()->getScreenSize(width, height);
+			tmp.x *= width;
+			tmp.y *= height;
 
 			// position without offset, in float
 			newProjCenter.x= tmp.x;
diff --git a/code/ryzom/client/src/interface_v3/group_in_scene_bubble.cpp b/code/ryzom/client/src/interface_v3/group_in_scene_bubble.cpp
index e964911c3..eb935bc40 100644
--- a/code/ryzom/client/src/interface_v3/group_in_scene_bubble.cpp
+++ b/code/ryzom/client/src/interface_v3/group_in_scene_bubble.cpp
@@ -668,9 +668,8 @@ CGroupInSceneBubbleManager::CPopupContext *CGroupInSceneBubbleManager::buildCont
 	if (target)
 	{
 		// Find a position
-		NL3D::UDriver *Driver = CViewRenderer::getInstance()->getDriver();
-		const uint width = Driver->getWindowWidth();
-		const uint height = Driver->getWindowHeight();
+		uint32 width, height;
+		CViewRenderer::getInstance()->getScreenSize(width, height);
 		h = (target->getXReal() < ((sint)width-target->getXReal()-target->getWReal()))?"l":"r";
 		v = (target->getYReal() < ((sint)height-target->getYReal()-target->getHReal()))?"b":"t";
 		target->setActive(true);