--- a/scn2k/scn2k_grp.cc
+++ b/scn2k/scn2k_grp.cc
@@ -1377,21 +1377,21 @@ bool GrpImpl::Wait(unsigned int current_
 	if (grpdump_req) {
 		grpdump_req = 0;
 		std::map<int,GrpObj>::iterator it;
-		fprintf(stderr,"front %08x(%d) / %08x(%d)\n",screen,screen->IsHidden(),screen_front,screen_front->IsHidden());
+		fprintf(stderr,"front %p(%d) / %p(%d)\n",screen,screen->IsHidden(),screen_front,screen_front->IsHidden());
 		for (it=grpobj.begin(); it != grpobj.end(); it++) {
 			GrpObj& obj = it->second;
 			GrpObj& parent_obj = grpobj[ ((it->first)/1000) * 1000];
 			if (obj.picture) {
 				if (!obj.name.empty()) {
-					fprintf(stderr,"obj %06d(%08x): name %10s  pos %d,%d alpha %d (%d/%d/%d)\n",
+					fprintf(stderr,"obj %06d(%p): name %10s  pos %d,%d alpha %d (%d/%d/%d)\n",
 					it->first,obj.picture,obj.name.c_str(),
 					obj.PosX(),obj.PosY(),obj.alpha,obj.attr&GrpObj::HIDDEN ? 1 : 0,parent_obj.attr&GrpObj::HIDDEN_GROUP ? 1 : 0,obj.picture->IsHidden());
 				} else if (!obj.print_moji.empty()) {
-					fprintf(stderr,"obj %06d(%08x): name %10s  pos %d,%d alpha %d (%d/%d/%d)\n",
+					fprintf(stderr,"obj %06d(%p): name %10s  pos %d,%d alpha %d (%d/%d/%d)\n",
 					it->first,obj.picture,obj.print_moji.c_str(),
 					obj.PosX(),obj.PosY(),obj.alpha,obj.attr&GrpObj::HIDDEN ? 1 : 0,parent_obj.attr&GrpObj::HIDDEN_GROUP ? 1 : 0,obj.picture->IsHidden());
 				} else {
-					fprintf(stderr,"obj %06d(%08x): name %10s  pos %d,%d alpha %d (%d/%d/%d)\n",
+					fprintf(stderr,"obj %06d(%p): name %10s  pos %d,%d alpha %d (%d/%d/%d)\n",
 					it->first,obj.picture,"<EMPTY>",
 					obj.PosX(),obj.PosY(),obj.alpha,obj.attr&GrpObj::HIDDEN ? 1 : 0,parent_obj.attr&GrpObj::HIDDEN_GROUP ? 1 : 0,obj.picture->IsHidden());
 				}
@@ -1399,7 +1399,7 @@ bool GrpImpl::Wait(unsigned int current_
 		}
 		std::list<PicBase*>::iterator it2;
 		for (it2=parent.children.begin(); it2!=parent.children.end();it2++) {
-			fprintf(stderr,"%08x(%d)\n",*it2,(*it2)->IsHidden());
+			fprintf(stderr,"%p(%d)\n",*it2,(*it2)->IsHidden());
 		}
 		RefreshObj();