diff --git a/index.src.html b/index.src.html
index b6adba8f..278141c8 100644
--- a/index.src.html
+++ b/index.src.html
@@ -1994,7 +1994,7 @@
   [EnforceRange] unsigned long displayAspectHeight;
   VideoColorSpaceInit colorSpace;
   HardwareAcceleration hardwareAcceleration = "no-preference";
-  boolean optimizeForLatency;
+  boolean optimizeForLatency = false;
   double rotation = 0;
   boolean flip = false;
 };