diff --git a/src/TSPrefix.h b/src/TSPrefix.h
index 6ffce8f5a..2bf20c5e9 100644
--- a/src/TSPrefix.h
+++ b/src/TSPrefix.h
@@ -1,6 +1,7 @@
 #import <CocoaLumberjack/CocoaLumberjack.h>
 #import <Foundation/Foundation.h>
 #import "Asserts.h"
+#import "OWSDispatch.h"
 
 #ifdef DEBUG
 static const NSUInteger ddLogLevel = DDLogLevelAll;