diff --git a/Classes/ChatConversationView.m b/Classes/ChatConversationView.m
index 5a14b17f0..939716770 100644
--- a/Classes/ChatConversationView.m
+++ b/Classes/ChatConversationView.m
@@ -660,7 +660,7 @@ static UICompositeViewDescription *compositeDescription = nil;
 	
 	// Group call :
 	if (self.groupCallAvailable ) {
-		[_callButton setImage:[UIImage imageNamed:@"voip_conference_new"] forState:UIControlStateNormal];
+		[_callButton setImage: [LinphoneUtils resizeImage:[UIImage imageNamed:@"voip_conference_new"] newSize:CGSizeMake(50, 50)] forState:UIControlStateNormal];
 		_callButton.hidden = false;
 	} else {
 		[_callButton setImage:[UIImage imageNamed:@"call_alt_start_default"] forState:UIControlStateNormal];
diff --git a/Classes/LinphoneUI/UIConfirmationDialog.m b/Classes/LinphoneUI/UIConfirmationDialog.m
index c8d3fc44b..6c8be2e3b 100644
--- a/Classes/LinphoneUI/UIConfirmationDialog.m
+++ b/Classes/LinphoneUI/UIConfirmationDialog.m
@@ -102,6 +102,7 @@
 	[_cancelButton setBackgroundImage:nil forState:UIControlStateNormal];
 	[_cancelButton setBackgroundColor:UIColor.whiteColor];
 	[_cancelButton setTitleColor:VoipTheme.voip_dark_gray forState:UIControlStateNormal];
+	_cancelButton.layer.borderColor = UIColor.whiteColor.CGColor;
 }
 
 - (IBAction)onCancelClick:(id)sender {