diff --git a/Yep.xcodeproj/project.pbxproj b/Yep.xcodeproj/project.pbxproj
index b0b0f4fb..3e38f53a 100644
--- a/Yep.xcodeproj/project.pbxproj
+++ b/Yep.xcodeproj/project.pbxproj
@@ -2951,7 +2951,7 @@
 				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
 				MTL_ENABLE_DEBUG_INFO = YES;
 				ONLY_ACTIVE_ARCH = YES;
-				OTHER_SWIFT_FLAGS = "-D DEBUG -D STAGING_";
+				OTHER_SWIFT_FLAGS = "-D DEBUG -D STAGING";
 				SDKROOT = iphoneos;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
 			};
diff --git a/Yep/Services/YepService.swift b/Yep/Services/YepService.swift
index 8df0d52a..e57ba139 100644
--- a/Yep/Services/YepService.swift
+++ b/Yep/Services/YepService.swift
@@ -3691,14 +3691,41 @@ func foursquareVenuesNearby(coordinate coordinate: CLLocationCoordinate2D, failu
 
 // MARK: Mention
 
-func usersMatchWithUsernamePrefix(usernamePrefix: String, failureHandler: ((Reason, String?) -> Void)?, completion: (JSONDictionary) -> Void) {
+struct UsernamePrefixMatchedUser {
+    let userID: String
+    let username: String
+    let nickname: String
+    let avatarURLString: String
+}
+
+func usersMatchWithUsernamePrefix(usernamePrefix: String, failureHandler: ((Reason, String?) -> Void)?, completion: ([UsernamePrefixMatchedUser]) -> Void) {
 
     let requestParameters = [
         "q": usernamePrefix,
     ]
 
-    let parse: JSONDictionary -> JSONDictionary? = { data in
-        return data
+    let parse: JSONDictionary -> [UsernamePrefixMatchedUser]? = { data in
+        //println("usersMatchWithUsernamePrefix: \(data)")
+
+        if let usersData = data["users"] as? [JSONDictionary] {
+            let users: [UsernamePrefixMatchedUser] = usersData.map({ userInfo in
+                guard let
+                    userID = userInfo["id"] as? String,
+                    username = userInfo["username"] as? String,
+                    nickname = userInfo["nickname"] as? String,
+                    avatarInfo = userInfo["avatar"] as? JSONDictionary,
+                    avatarURLString = avatarInfo["thumb_url"] as? String
+                else {
+                    return nil
+                }
+
+                return UsernamePrefixMatchedUser(userID: userID, username: username, nickname: nickname, avatarURLString: avatarURLString)
+            }).flatMap({ $0 })
+
+            return users
+        }
+
+        return nil
     }
 
     let resource = authJsonResource(path: "/v1/users/typeahead", method: .GET, requestParameters: requestParameters, parse: parse)
diff --git a/Yep/ViewControllers/Conversation/ConversationViewController.swift b/Yep/ViewControllers/Conversation/ConversationViewController.swift
index 2ba12702..7d2c2640 100644
--- a/Yep/ViewControllers/Conversation/ConversationViewController.swift
+++ b/Yep/ViewControllers/Conversation/ConversationViewController.swift
@@ -861,8 +861,8 @@ class ConversationViewController: BaseViewController {
 //            view.addSubview(conversationFPSLabel)
         #endif
 
-        usersMatchWithUsernamePrefix("a", failureHandler: nil) { data in
-            println("usersMatchWithUsernamePrefix: \(data)")
+        usersMatchWithUsernamePrefix("t", failureHandler: nil) { users in
+            println("usersMatchWithUsernamePrefix: \(users)")
         }
     }