diff --git a/Editor/RendererWindow.cpp b/Editor/RendererWindow.cpp
index d8131ec21..f89ba7cc0 100644
--- a/Editor/RendererWindow.cpp
+++ b/Editor/RendererWindow.cpp
@@ -84,7 +84,7 @@ void RendererWindow::Create(EditorComponent* editor)
 	});
 	AddWidget(&surfelGIDebugComboBox);
 
-	surfelGIBoostSlider.Create(1, 10, 1.0f, 1.0f, "Surfel GI Boost: ");
+	surfelGIBoostSlider.Create(1, 10, 1.0f, 1000.0f, "Surfel GI Boost: ");
 	surfelGIBoostSlider.SetTooltip("Adjust the strength of surfel GI.\nNote that values other than 1.0 will cause mismatch with path tracing reference");
 	surfelGIBoostSlider.SetSize(XMFLOAT2(100, itemheight));
 	surfelGIBoostSlider.SetPos(XMFLOAT2(x, y += step));
diff --git a/WickedEngine/wiRenderer.cpp b/WickedEngine/wiRenderer.cpp
index 18770562d..3f9d90b1f 100644
--- a/WickedEngine/wiRenderer.cpp
+++ b/WickedEngine/wiRenderer.cpp
@@ -96,7 +96,7 @@ bool disableAlbedoMaps = false;
 bool forceDiffuseLighting = false;
 bool SCREENSPACESHADOWS = false;
 bool SURFELGI = false;
-float SURFELGI_BOOST = 8.0f;
+float SURFELGI_BOOST = 1.0f;
 SURFEL_DEBUG SURFELGI_DEBUG = SURFEL_DEBUG_NONE;