diff --git a/v2/internal/frontend/desktop/darwin/WailsContext.h b/v2/internal/frontend/desktop/darwin/WailsContext.h
index 022338c5..62e92bd7 100644
--- a/v2/internal/frontend/desktop/darwin/WailsContext.h
+++ b/v2/internal/frontend/desktop/darwin/WailsContext.h
@@ -10,6 +10,7 @@
 
 #import <Cocoa/Cocoa.h>
 #import <WebKit/WebKit.h>
+#import <UniformTypeIdentifiers/UTType.h>
 
 #define ON_MAIN_THREAD(str) dispatch_async(dispatch_get_main_queue(), ^{ str; });
 #define unicode(input) [NSString stringWithFormat:@"%C", input]
@@ -76,6 +77,7 @@
 - (NSScreen*) getCurrentScreen;
 
 - (void) SetAbout :(NSString*)title :(NSString*)description :(void*)imagedata :(int)datalen;
+- (void) dealloc;
 
 @end
 
diff --git a/v2/internal/frontend/desktop/darwin/WailsContext.m b/v2/internal/frontend/desktop/darwin/WailsContext.m
index 9a82a9b1..31dbaebb 100644
--- a/v2/internal/frontend/desktop/darwin/WailsContext.m
+++ b/v2/internal/frontend/desktop/darwin/WailsContext.m
@@ -98,13 +98,13 @@
 }
 
 - (void) dealloc {
-    [super dealloc];
     [self.appdelegate release];
     [self.mainWindow release];
     [self.mouseEvent release];
     [self.userContentController release];
     [self.urlRequests release];
     [self.applicationMenu release];
+    [super dealloc];
 }
 
 - (NSScreen*) getCurrentScreen {
@@ -278,7 +278,7 @@
 }
 
 - (NSMenu*) newMenu :(NSString*)title {
-    WailsMenu *result = [[[WailsMenu new] initWithTitle:title] autorelease];
+    WailsMenu *result = [[WailsMenu new] initWithTitle:title];
     [result setAutoenablesItems:NO];
     return result;
 }
@@ -376,15 +376,15 @@
 - (void) processURLResponse:(NSString *)url :(NSString *)contentType :(NSData *)data {
     id<WKURLSchemeTask> urlSchemeTask = self.urlRequests[url];
     NSURL *nsurl = [NSURL URLWithString:url];
-    
-    NSHTTPURLResponse *response = [NSHTTPURLResponse new];
     NSMutableDictionary *headerFields = [NSMutableDictionary new];
     headerFields[@"content-type"] = contentType;
-    [response initWithURL:nsurl statusCode:200 HTTPVersion:@"HTTP/1.1" headerFields:headerFields];
+    NSHTTPURLResponse *response = [[NSHTTPURLResponse new] initWithURL:nsurl statusCode:200 HTTPVersion:@"HTTP/1.1" headerFields:headerFields];
     [urlSchemeTask didReceiveResponse:response];
     [urlSchemeTask didReceiveData:data];
     [urlSchemeTask didFinish];
     [self.urlRequests removeObjectForKey:url];
+    [response release];
+    [headerFields release];
 }
 
 - (void)webView:(nonnull WKWebView *)webView startURLSchemeTask:(nonnull id<WKURLSchemeTask>)urlSchemeTask {
@@ -492,11 +492,20 @@
 
     // Filters - semicolon delimited list of file extensions
     if( allowFiles ) {
-        if( filters != nil ) {
+        if( filters != nil && [filters length] > 0) {
             filters = [filters stringByReplacingOccurrencesOfString:@"*." withString:@""];
             filters = [filters stringByReplacingOccurrencesOfString:@" " withString:@""];
             NSArray *filterList = [filters componentsSeparatedByString:@";"];
-            [dialog setAllowedFileTypes:filterList];
+            if (@available(macOS 10.16, *)) {
+                NSMutableArray *contentTypes = [[NSMutableArray new] autorelease];
+                for (NSString *filter in filterList) {
+                    UTType *t = [UTType typeWithFilenameExtension:filter];
+                    [contentTypes addObject:t];
+                }
+                [dialog setAllowedContentTypes:contentTypes];
+            } else {
+                [dialog setAllowedFileTypes:filterList];
+            }
         } else {
             [dialog setAllowsOtherFileTypes:true];
         }
diff --git a/v2/internal/frontend/desktop/darwin/WailsMenu.m b/v2/internal/frontend/desktop/darwin/WailsMenu.m
index 7b20eb23..45adfd0d 100644
--- a/v2/internal/frontend/desktop/darwin/WailsMenu.m
+++ b/v2/internal/frontend/desktop/darwin/WailsMenu.m
@@ -64,7 +64,7 @@
             if( appName == nil ) {
                 appName = [[NSProcessInfo processInfo] processName];
             }
-            WailsMenu *appMenu = [[WailsMenu new] initWithNSTitle:appName];
+            WailsMenu *appMenu = [[[WailsMenu new] initWithNSTitle:appName] autorelease];
             id quitTitle = [@"Quit " stringByAppendingString:appName];
             NSMenuItem* quitMenuItem = [self newMenuItem:quitTitle :@selector(Quit) :@"q" :NSEventModifierFlagCommand];
             quitMenuItem.target = ctx;
@@ -77,7 +77,7 @@
         }
         case EditMenu:
         {
-            WailsMenu *editMenu = [[WailsMenu new] initWithNSTitle:@"Edit"];
+            WailsMenu *editMenu = [[[WailsMenu new] initWithNSTitle:@"Edit"] autorelease];
             [editMenu addItem:[self newMenuItem:@"Undo" :@selector(undoActionName) :@"z" :NSEventModifierFlagCommand]];
             [editMenu addItem:[self newMenuItem:@"Redo" :@selector(redoActionName) :@"z" :(NSEventModifierFlagShift | NSEventModifierFlagCommand)]];
             [editMenu addItem:[NSMenuItem separatorItem]];
@@ -91,7 +91,7 @@
 //            NSMenuItem *speechMenuItem = [[NSMenuItem new] autorelease];
 //            [speechMenuItem setTitle:@"Speech"];
 //            [editMenu addItem:speechMenuItem];
-            WailsMenu *speechMenu =  [[WailsMenu new] initWithNSTitle:@"Speech"];
+            WailsMenu *speechMenu =  [[[WailsMenu new] initWithNSTitle:@"Speech"] autorelease];
             [speechMenu addItem:[self newMenuItem:@"Start Speaking" :@selector(startSpeaking:) :@""]];
             [speechMenu addItem:[self newMenuItem:@"Stop Speaking" :@selector(stopSpeaking:) :@""]];
             [editMenu appendSubmenu:speechMenu];
diff --git a/v2/internal/frontend/desktop/darwin/frontend.go b/v2/internal/frontend/desktop/darwin/frontend.go
index 141d661c..4f7403b9 100644
--- a/v2/internal/frontend/desktop/darwin/frontend.go
+++ b/v2/internal/frontend/desktop/darwin/frontend.go
@@ -5,7 +5,7 @@ package darwin
 
 /*
 #cgo CFLAGS: -x objective-c
-#cgo LDFLAGS: -framework Foundation -framework Cocoa -framework WebKit
+#cgo LDFLAGS: -framework Foundation -framework Cocoa -framework WebKit -framework UniformTypeIdentifiers
 #import <Foundation/Foundation.h>
 #import "Application.h"
 #import "WailsContext.h"