diff --git a/SignalMessaging/utils/OWSPreferences.h b/SignalMessaging/utils/OWSPreferences.h
index 0f9369769..fe3a9a333 100644
--- a/SignalMessaging/utils/OWSPreferences.h
+++ b/SignalMessaging/utils/OWSPreferences.h
@@ -17,6 +17,8 @@ typedef NS_ENUM(NSUInteger, NotificationType) {
 extern NSString *const OWSPreferencesSignalDatabaseCollection;
 extern NSString *const OWSPreferencesKeyEnableDebugLog;
 
+@class YapDatabaseReadWriteTransaction;
+
 @interface OWSPreferences : NSObject
 
 #pragma mark - Helpers