diff --git a/examples/expo-example/src/app.tsx b/examples/expo-example/src/app.tsx
index 297fb7d..2317e7d 100644
--- a/examples/expo-example/src/app.tsx
+++ b/examples/expo-example/src/app.tsx
@@ -79,6 +79,7 @@ function App() {
 				backgroundColor: "#fff",
 				alignItems: "center",
 				justifyContent: "center",
+				elevation: 6,
 			})}
 		>
 			<Text>Open up App.tsx to start working on your app!</Text>
diff --git a/packages/yoshiki/package.json b/packages/yoshiki/package.json
index d218562..d3554a0 100644
--- a/packages/yoshiki/package.json
+++ b/packages/yoshiki/package.json
@@ -1,6 +1,6 @@
 {
 	"name": "yoshiki",
-	"version": "0.3.3",
+	"version": "0.3.4",
 	"author": "Zoe Roux <zoe.roux@sdg.moe> (https://github.com/AnonymusRaccoon)",
 	"license": "MIT",
 	"keywords": [
diff --git a/packages/yoshiki/src/web/generator.ts b/packages/yoshiki/src/web/generator.ts
index 4e97e2a..4c86f89 100644
--- a/packages/yoshiki/src/web/generator.ts
+++ b/packages/yoshiki/src/web/generator.ts
@@ -43,7 +43,7 @@ const stateMapper: {
 const sanitize = (className: unknown) => {
 	const name = typeof className === "string" ? className : JSON.stringify(className);
 	if (name === undefined) return "undefined";
-	return name.replaceAll(/[^\w-_]/g, "");
+	return name.replaceAll(/[^\w\d_]/g, "");
 };
 
 type PreprocessBlockFunction = (block: { [key: string]: unknown }) => { [key: string]: unknown };
@@ -67,6 +67,7 @@ const generateClass = (
 				: [`${cssKey}: ${nValue};`];
 		})
 		.join(" ");
+	if (!block.length) return [];
 	return [[className, addCssContext(className, `{ ${block} }`)]];
 };