diff --git a/services/audioflinger/Threads.cpp b/services/audioflinger/Threads.cpp
index b2a1e18..af4c7cb 100644
--- a/services/audioflinger/Threads.cpp
+++ b/services/audioflinger/Threads.cpp
@@ -6874,7 +6874,7 @@
             recordTrack->clearSyncStartEvent();
         } else {
             // do not wait for the event for more than AudioSystem::kSyncRecordStartTimeOutMs
-            recordTrack->mFramesToDrop = -
+            recordTrack->mFramesToDrop = -(ssize_t)
                     ((AudioSystem::kSyncRecordStartTimeOutMs * recordTrack->mSampleRate) / 1000);
         }
     }