diff --git a/Classes/ChatsListTableView.m b/Classes/ChatsListTableView.m
index 4264087b9..abeeeee96 100644
--- a/Classes/ChatsListTableView.m
+++ b/Classes/ChatsListTableView.m
@@ -161,7 +161,7 @@ static int sorted_history_comparison(LinphoneChatRoom *to_insert, LinphoneChatRo
         }
         [dict setObject:display
                  forKey:@"display"];
-        [dict setObject:[NSNumber numberWithBool:linphone_chat_room_get_conference_address(cr)]
+        [dict setObject:[NSNumber numberWithBool:!!linphone_chat_room_get_conference_address(cr)]
                  forKey:@"nbParticipants"];
         [addresses addObject:dict];
         if (addresses.count >= 4) //send no more data than needed
diff --git a/linphone.xcodeproj/project.pbxproj b/linphone.xcodeproj/project.pbxproj
index c604f543a..c0aee81fc 100755
--- a/linphone.xcodeproj/project.pbxproj
+++ b/linphone.xcodeproj/project.pbxproj
@@ -5034,7 +5034,7 @@
 					"$(SRCROOT)/Classes/Utils/XMLRPC/",
 				);
 				INFOPLIST_FILE = "linphone-Info.plist";
-				IPHONEOS_DEPLOYMENT_TARGET = 11.2;
+				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				LIBRARY_SEARCH_PATHS = "$(BUILT_PRODUCTS_DIR)";
 				LINK_WITH_STANDARD_LIBRARIES = YES;
@@ -5138,7 +5138,7 @@
 					"$(SRCROOT)/Classes/Utils/XMLRPC/",
 				);
 				INFOPLIST_FILE = "linphone-Info.plist";
-				IPHONEOS_DEPLOYMENT_TARGET = 11.2;
+				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				LIBRARY_SEARCH_PATHS = "$(BUILT_PRODUCTS_DIR)";
 				LINK_WITH_STANDARD_LIBRARIES = YES;
@@ -5242,7 +5242,7 @@
 					"$(SRCROOT)/Classes/Utils/XMLRPC/",
 				);
 				INFOPLIST_FILE = "linphone-Info.plist";
-				IPHONEOS_DEPLOYMENT_TARGET = 11.2;
+				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				LIBRARY_SEARCH_PATHS = "$(BUILT_PRODUCTS_DIR)";
 				LINK_WITH_STANDARD_LIBRARIES = YES;
@@ -5346,7 +5346,7 @@
 					"$(SRCROOT)/Classes/Utils/XMLRPC/",
 				);
 				INFOPLIST_FILE = "linphone-Info.plist";
-				IPHONEOS_DEPLOYMENT_TARGET = 11.2;
+				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				LIBRARY_SEARCH_PATHS = "$(BUILT_PRODUCTS_DIR)";
 				LINK_WITH_STANDARD_LIBRARIES = YES;