diff --git a/packages/utils/callingNumberKorean.ts b/packages/utils/callingNumberKorean.ts
index 0075bf3..edf9f2b 100644
--- a/packages/utils/callingNumberKorean.ts
+++ b/packages/utils/callingNumberKorean.ts
@@ -1,7 +1,7 @@
 export default class CallingNumberKorean {
     // 개, 살 이 붙는 경우 발음법
     static SecondDigit = [
-        "열", "스물", "서른", "마흔", "쉰",
+        "", "열", "스물", "서른", "마흔", "쉰",
         "예순", "일흔", "여든", "아흔",
     ]
     static FirstDigit = [
diff --git a/packages/utils/saferKorean.ts b/packages/utils/saferKorean.ts
index a04415a..597bffa 100644
--- a/packages/utils/saferKorean.ts
+++ b/packages/utils/saferKorean.ts
@@ -161,7 +161,10 @@ export function saferKorean(input: string): string {
             mod = SIPrefix[mod.toLowerCase() as keyof typeof SIPrefix];
             return `${num} ${mod}바이트 `;
         })
-        .replace(/(\d+)[ \t\n]*([개살시])/g, (_, num: string, postfix: string)=>{
+        .replace(/([\d.]+)[ \t\n]*([개살시])/g, (_, num: string, postfix: string)=>{
+            if (num.includes(".")) {
+                return num + postfix;
+            }
             const intNum = parseInt(num)
             if (CallingNumberKorean.canConvert(intNum)) {
                 return CallingNumberKorean.convert(intNum) + postfix;