diff --git a/libs/wxutil/preview/RenderPreview.cpp b/libs/wxutil/preview/RenderPreview.cpp
index 2601d238e8..6c02b4a393 100644
--- a/libs/wxutil/preview/RenderPreview.cpp
+++ b/libs/wxutil/preview/RenderPreview.cpp
@@ -218,6 +218,9 @@ void RenderPreview::initialisePreview()
         setLightingModeEnabled(false);
     }
 
+    // In case it didn't happen until now, make sure the rendersystem is realised
+    _renderSystem->realise();
+
     updateModelViewMatrix();
 }