diff --git a/src/threepp/helpers/SpotLightHelper.cpp b/src/threepp/helpers/SpotLightHelper.cpp
index f5bce8fb..c520eddf 100644
--- a/src/threepp/helpers/SpotLightHelper.cpp
+++ b/src/threepp/helpers/SpotLightHelper.cpp
@@ -1,7 +1,7 @@
 
 #include "threepp/helpers/SpotLightHelper.hpp"
 
-#include "threepp/lights/Spotlight.hpp"
+#include "threepp/lights/SpotLight.hpp"
 #include "threepp/materials/LineBasicMaterial.hpp"
 #include "threepp/objects/LineSegments.hpp"