diff --git a/src/wallet/monero_wallet_core.cpp b/src/wallet/monero_wallet_core.cpp
index 39e09e5..4832e44 100644
--- a/src/wallet/monero_wallet_core.cpp
+++ b/src/wallet/monero_wallet_core.cpp
@@ -3237,15 +3237,14 @@ namespace monero {
     m_syncing_thread_done = false;
     m_syncing_interval = DEFAULT_SYNC_INTERVAL_MILLIS;
 
-    // TODO: tools::get_max_concurrency() w/o pthreads correctly returns 1 on Safari but 8 on Chrome which fails in common/threadpool constructor
-    #ifndef __EMSCRIPTEN_PTHREADS__
-      tools::set_max_concurrency(1);
+    // start auto sync loop unless single-threaded emscripten
+    #if !defined(__EMSCRIPTEN__) || defined(__EMSCRIPTEN_PTHREADS__)
+      m_syncing_thread = boost::thread([this]() {
+        this->sync_thread_func();
+      });
+    #elif
+      tools::set_max_concurrency(1);  // TODO: single-threaded emscripten tools::get_max_concurrency() correctly returns 1 on Safari but 8 on Chrome which fails in common/threadpool constructor
     #endif
-
-//    // start auto sync loop
-//    m_syncing_thread = boost::thread([this]() {
-//      this->sync_thread_func();
-//    });
   }
 
   // private helper to initialize subaddresses using transfer details