diff --git a/engine/src/flutter/shell/platform/android/android_shell_holder.h b/engine/src/flutter/shell/platform/android/android_shell_holder.h
index 6d123970fc8..ce966ebb6da 100644
--- a/engine/src/flutter/shell/platform/android/android_shell_holder.h
+++ b/engine/src/flutter/shell/platform/android/android_shell_holder.h
@@ -52,7 +52,7 @@ class AndroidShellHolder {
   std::unique_ptr<Shell> shell_;
   bool is_valid_ = false;
   pthread_key_t thread_destruct_key_;
-  uint64_t next_pointer_flow_id_;
+  uint64_t next_pointer_flow_id_ = 0;
 
   static void ThreadDestructCallback(void* value);
 
diff --git a/engine/src/flutter/shell/platform/embedder/embedder_engine.h b/engine/src/flutter/shell/platform/embedder/embedder_engine.h
index 124f829fd19..ab962066ea0 100644
--- a/engine/src/flutter/shell/platform/embedder/embedder_engine.h
+++ b/engine/src/flutter/shell/platform/embedder/embedder_engine.h
@@ -75,7 +75,7 @@ class EmbedderEngine {
   const EmbedderExternalTextureGL::ExternalTextureCallback
       external_texture_callback_;
   bool is_valid_ = false;
-  uint64_t next_pointer_flow_id_;
+  uint64_t next_pointer_flow_id_ = 0;
 
   FML_DISALLOW_COPY_AND_ASSIGN(EmbedderEngine);
 };