diff --git a/modules/report/report.js b/modules/report/report.js
index cf463f0..2e9bbe9 100644
--- a/modules/report/report.js
+++ b/modules/report/report.js
@@ -9,7 +9,8 @@ var report = function(dbot) {
 
             if(_.has(event.allChannels, channelName)) {
                 var channel = event.allChannels[channelName];
-                if(_.has(channel.nicks, nick)) {
+                if(dbot.api.users.isChannelUser(event.server, nick, channelName, true)) {
+                    var nick = dbot.api.users.resolveUser(event.server, nick, true);
                     var ops = _.filter(channel.nicks, function(user) {
                         return user.op; 
                     });
diff --git a/modules/report/strings.json b/modules/report/strings.json
index 27f58d6..e5a467d 100644
--- a/modules/report/strings.json
+++ b/modules/report/strings.json
@@ -6,7 +6,7 @@
         "english": "Thank you, {reported} has been reported to the channel administrators."
     },
     "user_not_found": {
-        "english": "{reported} does not appear to be in {channel}."
+        "english": "{reported} isn't a known user in {channel}."
     },
     "not_in_channel": {
         "english": "I am not present in {channel}."
diff --git a/modules/users/api.js b/modules/users/api.js
index c36e21e..f7571fc 100644
--- a/modules/users/api.js
+++ b/modules/users/api.js
@@ -65,6 +65,16 @@ var api = function(dbot) {
                 nick = nick.name;
                 return _.include(possiNicks, nick); 
             }, this);
+        },
+
+        'isChannelUser': function(server, user, channel, useLowerCase) {
+            var knownUsers = this.getServerUsers(server);
+            var user = this.api.resolveUser(server, user, useLowerCase); 
+
+            if(!_.has(knownUsers.channelUsers, channel)) {
+                return false;
+            } 
+            return _.include(knownUsers.channelUsers[channel], user);
         }
     };
 
diff --git a/modules/users/users.js b/modules/users/users.js
index c093cff..c480dd0 100644
--- a/modules/users/users.js
+++ b/modules/users/users.js
@@ -49,6 +49,7 @@ var users = function(dbot) {
             } else {
                 knownUsers.users.push(nick);
             }
+
             if(!_.include(channelUsers, nick)) {
                 channelUsers.push(nick);
             }