diff --git a/platform/javascript/javascript_main.cpp b/platform/javascript/javascript_main.cpp
index e1fba262de6..b86e41555dd 100644
--- a/platform/javascript/javascript_main.cpp
+++ b/platform/javascript/javascript_main.cpp
@@ -65,6 +65,11 @@ void main_loop_callback() {
 
 	int target_fps = Engine::get_singleton()->get_target_fps();
 	if (target_fps > 0) {
+		if (current_ticks - target_ticks > 1000000) {
+			// When the window loses focus, we stop getting updates and accumulate delay.
+			// For this reason, if the difference is too big, we reset target ticks to the current ticks.
+			target_ticks = current_ticks;
+		}
 		target_ticks += (uint64_t)(1000000 / target_fps);
 	}
 	if (os->main_loop_iterate()) {