diff --git a/libs/log/source/log.cpp b/libs/log/source/log.cpp
index 119305ce..5381d20b 100644
--- a/libs/log/source/log.cpp
+++ b/libs/log/source/log.cpp
@@ -89,7 +89,12 @@ namespace psemek::log
 
 			std::lock_guard lock{sinks_mutex};
 			for (auto const & sink : sinks)
+			{
 				sink->put_message(msg);
+#ifdef __EMSCRIPTEN__
+				sink->flush();
+#endif
+			}
 		}
 
 		static ::tm safe_localtime(std::time_t const & time)