diff --git a/spine-ts/spine-construct3/spine-construct3-lib/src/SpineBoundsProvider.ts b/spine-ts/spine-construct3/spine-construct3-lib/src/SpineBoundsProvider.ts
index 324590552..ff64d51f5 100644
--- a/spine-ts/spine-construct3/spine-construct3-lib/src/SpineBoundsProvider.ts
+++ b/spine-ts/spine-construct3/spine-construct3-lib/src/SpineBoundsProvider.ts
@@ -119,7 +119,7 @@ export class SkinsAndAnimationBoundsProvider implements SpineBoundsProvider {
 		}
 		skeleton.setupPose();
 
-		const animation = this.animation != null ? data.findAnimation(this.animation) : null;
+		const animation = this.animation ? data.findAnimation(this.animation) : null;
 
 		if (animation == null) {
 			skeleton.updateWorldTransform(Physics.update);
diff --git a/spine-ts/spine-construct3/src/c3runtime/instance.ts b/spine-ts/spine-construct3/src/c3runtime/instance.ts
index cc192619e..8ce1f8d68 100644
--- a/spine-ts/spine-construct3/src/c3runtime/instance.ts
+++ b/spine-ts/spine-construct3/src/c3runtime/instance.ts
@@ -113,7 +113,8 @@ class SpineC3Instance extends globalThis.ISDKWorldInstanceBase {
 			this.propLoaderScale = properties[2] as number;
 			const skinProp = properties[3] as string;
 			this.propSkin = skinProp === "" ? [] : skinProp.split(",");
-			this.propAnimation = properties[4] as string;
+			const animationProp = properties[4] as string;
+			this.propAnimation = animationProp === "" ? undefined : animationProp;
 			this.propDebugSkeleton = properties[5] as boolean;
 			this.propEnableCollision = properties[6] as boolean;
 			const boundsProviderIndex = properties[7] as number;