diff --git a/components/sceneutil/glextensions.cpp b/components/sceneutil/glextensions.cpp
index eb55e17b1c..3a14dab8ed 100644
--- a/components/sceneutil/glextensions.cpp
+++ b/components/sceneutil/glextensions.cpp
@@ -33,6 +33,11 @@ namespace SceneUtil
         GLExtensionsObserver GLExtensionsObserver::sInstance{};
     }
 
+    bool glExtensionsReady()
+    {
+        return !sGLExtensions.empty();
+    }
+
     osg::GLExtensions& getGLExtensions()
     {
         if (sGLExtensions.empty())
diff --git a/components/sceneutil/glextensions.hpp b/components/sceneutil/glextensions.hpp
index 17a4eb8488..05e7f715c1 100644
--- a/components/sceneutil/glextensions.hpp
+++ b/components/sceneutil/glextensions.hpp
@@ -6,6 +6,7 @@
 
 namespace SceneUtil
 {
+    bool glExtensionsReady();
     osg::GLExtensions& getGLExtensions();
 
     class GetGLExtensionsOperation : public osg::GraphicsOperation
diff --git a/components/sceneutil/lightmanager.cpp b/components/sceneutil/lightmanager.cpp
index 48efb7fda9..c76f0b6b5c 100644
--- a/components/sceneutil/lightmanager.cpp
+++ b/components/sceneutil/lightmanager.cpp
@@ -825,9 +825,9 @@ namespace SceneUtil
         , mPointLightFadeEnd(0.f)
         , mPointLightFadeStart(0.f)
     {
-        osg::GLExtensions& exts = SceneUtil::getGLExtensions();
-        bool supportsUBO = exts.isUniformBufferObjectSupported;
-        bool supportsGPU4 = exts.isGpuShader4Supported;
+        osg::GLExtensions* exts = SceneUtil::glExtensionsReady() ? &SceneUtil::getGLExtensions() : nullptr;
+        bool supportsUBO = exts && exts->isUniformBufferObjectSupported;
+        bool supportsGPU4 = exts && exts->isGpuShader4Supported;
 
         mSupported[static_cast<int>(LightingMethod::FFP)] = true;
         mSupported[static_cast<int>(LightingMethod::PerObjectUniform)] = true;