diff --git a/src/main/java/solution/gdsc/PathPal/domain/inference/service/InferenceService.java b/src/main/java/solution/gdsc/PathPal/domain/inference/service/InferenceService.java
index b3e887c..07037a3 100644
--- a/src/main/java/solution/gdsc/PathPal/domain/inference/service/InferenceService.java
+++ b/src/main/java/solution/gdsc/PathPal/domain/inference/service/InferenceService.java
@@ -112,9 +112,9 @@ else if (!left.isEmpty() && !center.isEmpty() && !right.isEmpty()) {
          */
 
         if (!left.isEmpty() || !center.isEmpty() || !right.isEmpty()) {
-            return "[{\"koreanTTSString\":" +
+            return "[{\"koreanTTSString\":\"" +
                     left.append(center).append(right) +
-                    ", \"needAlert\": \"" + isAlert + "\"}]";
+                    "\", \"needAlert\": \"" + isAlert + "\"}]";
         }
         else {
             return "[]";