diff --git a/src/lime/ui/FileDialog.hx b/src/lime/ui/FileDialog.hx
index 559cc912c..d1ac15372 100644
--- a/src/lime/ui/FileDialog.hx
+++ b/src/lime/ui/FileDialog.hx
@@ -112,7 +112,10 @@ class FileDialog
 					var path = null;
 					#if hl
 					var bytes = NativeCFFI.lime_file_dialog_open_file(title, filter, defaultPath);
-					path = @:privateAccess String.fromUTF8(cast bytes);
+					if (bytes != null)
+					{
+						path = @:privateAccess String.fromUTF8(cast bytes);
+					}
 					#else
 					path = NativeCFFI.lime_file_dialog_open_file(title, filter, defaultPath);
 					#end
@@ -149,7 +152,10 @@ class FileDialog
 					var path = null;
 					#if hl
 					var bytes = NativeCFFI.lime_file_dialog_open_directory(title, filter, defaultPath);
-					path = @:privateAccess String.fromUTF8(cast bytes);
+					if (bytes != null)
+					{
+						path = @:privateAccess String.fromUTF8(cast bytes);
+					}
 					#else
 					path = NativeCFFI.lime_file_dialog_open_directory(title, filter, defaultPath);
 					#end
@@ -164,7 +170,10 @@ class FileDialog
 					var path = null;
 					#if hl
 					var bytes = NativeCFFI.lime_file_dialog_save_file(title, filter, defaultPath);
-					if (bytes != null) path = @:privateAccess String.fromUTF8(cast bytes);
+					if (bytes != null)
+					{
+						path = @:privateAccess String.fromUTF8(cast bytes);
+					}
 					#else
 					path = NativeCFFI.lime_file_dialog_save_file(title, filter, defaultPath);
 					#end