diff --git a/src/components/common/WordCloud.vue b/src/components/common/WordCloud.vue
index c525b8d..0c7e542 100644
--- a/src/components/common/WordCloud.vue
+++ b/src/components/common/WordCloud.vue
@@ -13,7 +13,7 @@
         :id="word.text"
         :style="{
           fontSize: isSelected(word.text)
-            ? word.size * 1.3 + 'px'
+            ? (word.size ?? minFontSize) * 1.3 + 'px'
             : word.size + 'px',
           fontFamily: word.font,
           cursor: 'pointer',
@@ -100,8 +100,8 @@ export default defineComponent({
     // }, 1500);
   },
   methods: {
-    isSelected(text: string) {
-      return this.selectedSkillStore.skill?.name === text;
+    isSelected(text: string | undefined) {
+      return text && this.selectedSkillStore.skill?.name === text;
     },
     noSelectionAtAll() {
       return !this.selectedSkillStore.skill?.name;