diff --git a/adb/daemon/usb.cpp b/adb/daemon/usb.cpp
index f4458a2c8..d07a00709 100644
--- a/adb/daemon/usb.cpp
+++ b/adb/daemon/usb.cpp
@@ -115,7 +115,7 @@ struct TransferId {
 };
 
 struct IoBlock {
-    bool pending;
+    bool pending = false;
     struct iocb control;
     std::shared_ptr<Block> payload;