diff --git a/metrics/metrics_daemon.cc b/metrics/metrics_daemon.cc
index a746e06..4a69d8b 100644
--- a/metrics/metrics_daemon.cc
+++ b/metrics/metrics_daemon.cc
@@ -48,6 +48,10 @@
 const char kCrashReporterMatchRule[] =
     "type='signal',interface='%s',path='/',member='%s'";
 
+// Build type of an official build.
+// See src/third_party/chromiumos-overlay/chromeos/scripts/cros_set_lsb_release.
+const char kOfficialBuild[] = "Official Build";
+
 const int kSecondsPerMinute = 60;
 const int kMinutesPerHour = 60;
 const int kHoursPerDay = 24;
@@ -209,6 +213,13 @@
   return cached_version_hash;
 }
 
+bool MetricsDaemon::IsOnOfficialBuild() const {
+  std::string build_type;
+  return (base::SysInfo::GetLsbReleaseValue("CHROMEOS_RELEASE_BUILD_TYPE",
+                                            &build_type) &&
+          build_type == kOfficialBuild);
+}
+
 void MetricsDaemon::Init(bool testing,
                          bool uploader_active,
                          MetricsLibraryInterface* metrics_lib,
@@ -327,9 +338,14 @@
       base::TimeDelta::FromMilliseconds(kUpdateStatsIntervalMs));
 
   if (uploader_active_) {
-    LOG(INFO) << "uploader enabled";
-    upload_service_.reset(new UploadService(new SystemProfileCache(), server_));
-    upload_service_->Init(upload_interval_, metrics_file_);
+    if (IsOnOfficialBuild()) {
+      LOG(INFO) << "uploader enabled";
+      upload_service_.reset(
+          new UploadService(new SystemProfileCache(), server_));
+      upload_service_->Init(upload_interval_, metrics_file_);
+    } else {
+      LOG(INFO) << "uploader disabled on non-official build";
+    }
   }
 
   return EX_OK;
diff --git a/metrics/metrics_daemon.h b/metrics/metrics_daemon.h
index 397fd21..d38dcd9 100644
--- a/metrics/metrics_daemon.h
+++ b/metrics/metrics_daemon.h
@@ -273,6 +273,9 @@
   // to a unsigned 32-bit int.
   uint32_t GetOsVersionHash();
 
+  // Returns true if the system is using an official build.
+  bool IsOnOfficialBuild() const;
+
   // Updates stats, additionally sending them to UMA if enough time has elapsed
   // since the last report.
   void UpdateStats(base::TimeTicks now_ticks, base::Time now_wall_time);