diff --git a/modules/juce_core/javascript/juce_Javascript.cpp b/modules/juce_core/javascript/juce_Javascript.cpp
index 3ffedae69f..cb39a43edc 100644
--- a/modules/juce_core/javascript/juce_Javascript.cpp
+++ b/modules/juce_core/javascript/juce_Javascript.cpp
@@ -774,7 +774,9 @@ private:
 };
 
 //==============================================================================
-JavascriptEngine::JavascriptEngine() : impl (std::make_unique<Impl>())
+JavascriptEngine::JavascriptEngine()
+    : maximumExecutionTime (15.0),
+      impl (std::make_unique<Impl>())
 {
 }