diff --git a/cache/src/main/java/net/runelite/cache/definitions/InterfaceDefinition.java b/cache/src/main/java/net/runelite/cache/definitions/InterfaceDefinition.java
index aede6d6d7b..4ba97725d4 100644
--- a/cache/src/main/java/net/runelite/cache/definitions/InterfaceDefinition.java
+++ b/cache/src/main/java/net/runelite/cache/definitions/InterfaceDefinition.java
@@ -46,7 +46,7 @@ public class InterfaceDefinition
 	public int scrollWidth;
 	public int scrollHeight;
 	public boolean noClickThrough;
-	public int spriteId;
+	public int spriteId = -1;
 	public int textureId;
 	public boolean spriteTiling;
 	public int opacity;
@@ -54,34 +54,34 @@ public class InterfaceDefinition
 	public int shadowColor;
 	public boolean flippedVertically;
 	public boolean flippedHorizontally;
-	public int modelType;
-	public int modelId;
+	public int modelType = 1;
+	public int modelId = -1;
 	public int offsetX2d;
 	public int offsetY2d;
 	public int rotationX;
 	public int rotationY;
 	public int rotationZ;
-	public int modelZoom;
-	public int animation;
+	public int modelZoom = 100;
+	public int animation = -1;
 	public boolean orthogonal;
 	public int modelHeightOverride;
-	public int fontId;
-	public String text;
+	public int fontId = -1;
+	public String text = "";
 	public int lineHeight;
 	public int xTextAlignment;
 	public int yTextAlignment;
 	public boolean textShadowed;
 	public int textColor;
 	public boolean filled;
-	public int lineWidth;
+	public int lineWidth = 1;
 	public boolean lineDirection;
 	public int clickMask;
-	public String name;
+	public String name = "";
 	public String[] actions;
 	public int dragDeadZone;
 	public int dragDeadTime;
 	public boolean dragRenderBehavior;
-	public String targetVerb;
+	public String targetVerb = "";
 	public Object[] onLoadListener;
 	public Object[] onMouseOverListener;
 	public Object[] onMouseLeaveListener;
@@ -119,13 +119,13 @@ public class InterfaceDefinition
 	public int[] yOffsets;
 	public int[] sprites;
 	public String[] configActions;
-	public String alternateText;
+	public String alternateText = "";
 	public int alternateTextColor;
 	public int hoveredTextColor;
 	public int alternateHoveredTextColor;
-	public int alternateSpriteId;
-	public int alternateModelId;
-	public int alternateAnimation;
-	public String spellName;
-	public String tooltip;
+	public int alternateSpriteId = -1;
+	public int alternateModelId = -1;
+	public int alternateAnimation = -1;
+	public String spellName = "";
+	public String tooltip = "Ok";
 }