diff --git a/projects/ucap-webmessenger-ui-chat/src/lib/components/messages.component.ts b/projects/ucap-webmessenger-ui-chat/src/lib/components/messages.component.ts
index 797d512e..391b45d9 100644
--- a/projects/ucap-webmessenger-ui-chat/src/lib/components/messages.component.ts
+++ b/projects/ucap-webmessenger-ui-chat/src/lib/components/messages.component.ts
@@ -36,20 +36,24 @@ export class MessagesComponent implements OnInit {
   }
 
   getUserName(seq: number): string {
-    const userInfo: UserInfo[] = this.userInfos.filter(
-      user => user.seq === seq
-    );
-    if (!!userInfo && userInfo.length > 0) {
-      return userInfo[0].name;
+    if (!!this.userInfos) {
+      const userInfo: UserInfo[] = this.userInfos.filter(
+        user => user.seq === seq
+      );
+      if (!!userInfo && userInfo.length > 0) {
+        return userInfo[0].name;
+      }
     }
     return '(알수없는 사용자)';
   }
   getUserProfile(seq: number): string {
-    const userInfo: UserInfo[] = this.userInfos.filter(
-      user => user.seq === seq
-    );
-    if (!!userInfo && userInfo.length > 0) {
-      return this.profileImageRoot + userInfo[0].profileImageFile;
+    if (!!this.userInfos) {
+      const userInfo: UserInfo[] = this.userInfos.filter(
+        user => user.seq === seq
+      );
+      if (!!userInfo && userInfo.length > 0) {
+        return this.profileImageRoot + userInfo[0].profileImageFile;
+      }
     }
     return '';
   }