diff --git a/adb/client/incremental_server.cpp b/adb/client/incremental_server.cpp
index 1f47de872..737563cc4 100644
--- a/adb/client/incremental_server.cpp
+++ b/adb/client/incremental_server.cpp
@@ -228,7 +228,7 @@ class IncrementalServer {
     std::vector<char> pendingBlocks_;
 
     // True when client notifies that all the data has been received
-    bool servingComplete_;
+    bool servingComplete_ = false;
 };
 
 bool IncrementalServer::SkipToRequest(void* buffer, size_t* size, bool blocking) {