--- src/corelib/io/qfilesystemengine_unix.cpp.orig
+++ src/corelib/io/qfilesystemengine_unix.cpp
@@ -83,6 +83,7 @@
     return (fileInfo->finderFlags & kIsInvisible);
 }
 
+#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
 static bool isPackage(const QFileSystemMetaData &data, const QFileSystemEntry &entry)
 {
     if (!data.isDirectory())
@@ -138,6 +139,7 @@
     FolderInfo *folderInfo = reinterpret_cast<FolderInfo *>(catalogInfo.finderInfo);
     return folderInfo->finderFlags & kHasBundle;
 }
+#endif
 
 #else
 static inline bool _q_isMacHidden(const char *nativePath)
@@ -529,8 +531,22 @@
 
 #if !defined(QWS) && !defined(Q_WS_QPA) && defined(Q_OS_MAC)
     if (what & QFileSystemMetaData::BundleType) {
+#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
         if (entryExists && isPackage(data, entry))
             data.entryFlags |= QFileSystemMetaData::BundleType;
+#else
+        if (entryExists && data.isDirectory()) {
+            QCFType<CFStringRef> path = CFStringCreateWithBytes(0,
+                    (const UInt8*)nativeFilePath, nativeFilePathLength,
+                    kCFStringEncodingUTF8, false);
+            QCFType<CFURLRef> url = CFURLCreateWithFileSystemPath(0, path,
+                    kCFURLPOSIXPathStyle, true);
+
+            UInt32 type, creator;
+            if (CFBundleGetPackageInfoInDirectory(url, &type, &creator))
+                data.entryFlags |= QFileSystemMetaData::BundleType;
+        }
+#endif
         data.knownFlagsMask |= QFileSystemMetaData::BundleType;
     }
 #endif