1 files changed, 3 insertions, 1 deletions
diff --git a/src/mbgl/style/observer.hpp b/src/mbgl/style/observer.hpp
index f28fdfc084..60432334e2 100644
--- a/src/mbgl/style/observer.hpp
+++ b/src/mbgl/style/observer.hpp
@@ -5,6 +5,8 @@
 #include <mbgl/style/source_observer.hpp>
 #include <mbgl/map/update.hpp>
 
+#include <exception>
+
 namespace mbgl {
 namespace style {
 
@@ -13,7 +15,7 @@ class Observer : public GlyphAtlasObserver,
                  public SourceObserver {
 public:
     virtual void onUpdate(Update) {}
-    virtual void onStyleError() {}
+    virtual void onStyleError(std::exception_ptr) {}
     virtual void onStyleLoaded() {}
     virtual void onResourceError(std::exception_ptr) {}
 };