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src/components/brand/ArtikelMarke.jsx

@@ -128,7 +128,7 @@ class ArtikelMarke extends PureComponent {
                 '&:hover': disabled ? undefined : { opacity: 0.8 },
               }}
             >
-              <BrandThumb brand={brand} size={40} />
+              <BrandThumb brand={brand}/>
             </Box>
           ) : (
             <IconButton

src/components/brand/BrandThumb.jsx

@@ -10,7 +10,7 @@ export default class BrandThumb extends PureComponent {
   render() {
     const {
       brand,
-      size = 20,
+      size = 40,
       fallback = null,
       sx,
     } = this.props;