diff --git a/armorcore/sources/ts/uniforms.ts b/armorcore/sources/ts/uniforms.ts
index 3cd124ea..07f879f9 100644
--- a/armorcore/sources/ts/uniforms.ts
+++ b/armorcore/sources/ts/uniforms.ts
@@ -526,7 +526,7 @@ function uniforms_set_obj_const(obj: object_t, loc: kinc_const_loc_t, c: shader_
 		g4_set_float2(loc, v.x, v.y);
 	}
 	else if (c.type == "float") {
-		let f: f32 = 0.0;
+		let f: f32 = f32_nan();
 
 		if (c.link == "_object_info_index") {
 			f = obj.uid;
@@ -545,11 +545,11 @@ function uniforms_set_obj_const(obj: object_t, loc: kinc_const_loc_t, c: shader_
 		}
 		else if (uniforms_f32_links != null) {
 			f = uniforms_f32_links(obj, current_material(obj), c.link);
-			if (f == 0.0) {
-				return; // TODO: return when uniform is not found
-			}
 		}
 
+		if (f32_isnan(f)) {
+			return;
+		}
 		g4_set_float(loc, f);
 	}
 	else if (c.type == "floats") {
diff --git a/base/sources/uniforms_ext.ts b/base/sources/uniforms_ext.ts
index f4af3253..508a45eb 100644
--- a/base/sources/uniforms_ext.ts
+++ b/base/sources/uniforms_ext.ts
@@ -133,14 +133,14 @@ function uniforms_ext_f32_link(object: object_t, mat: material_data_t, link: str
 		for (let i: i32 = 0; i < keys.length; ++i) {
 			let key: string = keys[i];
 			// let script: string = parser_material_script_links[key]; ////
-			let result: f32 = 0.0;
+			let result: f32 = f32_nan();
 			// if (script != "") {
 				// result = js_eval(script);
 			// }
 			return result;
 		}
 	}
-	return 0.0;
+	return f32_nan();
 }
 
 function uniforms_ext_vec2_link(object: object_t, mat: material_data_t, link: string): vec2_t {