diff --git a/WickedEngine/wiGUI.cpp b/WickedEngine/wiGUI.cpp
index 79f7eb1903..9f78c10bb1 100644
--- a/WickedEngine/wiGUI.cpp
+++ b/WickedEngine/wiGUI.cpp
@@ -681,11 +681,17 @@ namespace wi::gui
 			theme.image.Apply(sprites[id].params);
 		}
 		theme.font.Apply(font.params);
-		SetShadowRadius(theme.shadow);
+		if (theme.shadow >= 0)
+		{
+			SetShadowRadius(theme.shadow);
+		}
 		SetShadowColor(theme.shadow_color);
 		theme.tooltipFont.Apply(tooltipFont.params);
 		theme.tooltipImage.Apply(tooltipSprite.params);
-		tooltip_shadow = theme.tooltip_shadow;
+		if (theme.tooltip_shadow >= 0)
+		{
+			tooltip_shadow = theme.tooltip_shadow;
+		}
 		tooltip_shadow_color = theme.tooltip_shadow_color;
 		shadow_highlight = theme.shadow_highlight;
 		shadow_highlight_color = theme.shadow_highlight_color;
diff --git a/WickedEngine/wiGUI.h b/WickedEngine/wiGUI.h
index a23ae574e1..c8ec92b573 100644
--- a/WickedEngine/wiGUI.h
+++ b/WickedEngine/wiGUI.h
@@ -210,7 +210,7 @@ namespace wi::gui
 			}
 		} font;
 
-		float shadow = 1; // shadow radius
+		float shadow = -1; // shadow radius, if less than 0, it won't be used to override
 		wi::Color shadow_color = wi::Color::Shadow(); // shadow color for whole widget
 		bool shadow_highlight = false;
 		XMFLOAT3 shadow_highlight_color = XMFLOAT3(1, 1, 1);
@@ -218,7 +218,7 @@ namespace wi::gui
 
 		Image tooltipImage;
 		Font tooltipFont;
-		float tooltip_shadow = 1; // shadow radius
+		float tooltip_shadow = -1; // shadow radius, if less than 0, it won't be used to override
 		wi::Color tooltip_shadow_color = wi::Color::Shadow();
 	};
 
diff --git a/WickedEngine/wiVersion.cpp b/WickedEngine/wiVersion.cpp
index 1ac3bab1b3..09b8f3f8af 100644
--- a/WickedEngine/wiVersion.cpp
+++ b/WickedEngine/wiVersion.cpp
@@ -9,7 +9,7 @@ namespace wi::version
 	// minor features, major updates, breaking compatibility changes
 	const int minor = 71;
 	// minor bug fixes, alterations, refactors, updates
-	const int revision = 690;
+	const int revision = 691;
 
 	const std::string version_string = std::to_string(major) + "." + std::to_string(minor) + "." + std::to_string(revision);