diff --git a/CHANGELOG.md b/CHANGELOG.md
index 66e184bd..a6d54bab 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,7 @@
 - Bugfix: Fixed 7TV usernames messing with Qt's HTML (#5780)
 - Bugfix: Fixed BTTV emotes occasionally showing the wrong author. (#5783)
 - Bugfix: Fixed some Twitch emotes containing HTML entities. (#5786)
+- Bugfix: Fixed the same blocked term showing up more than once. (#5789)
 - Dev: Hard-code Boost 1.86.0 in macos CI builders. (#5774)
 
 ## 2.5.2-beta.1
diff --git a/src/providers/twitch/TwitchIrcServer.cpp b/src/providers/twitch/TwitchIrcServer.cpp
index 8f0d3d5e..69d53a78 100644
--- a/src/providers/twitch/TwitchIrcServer.cpp
+++ b/src/providers/twitch/TwitchIrcServer.cpp
@@ -495,12 +495,12 @@ void TwitchIrcServer::initialize()
                             PubSubAutoModQueueMessage::Reason::BlockedTerm)
                         {
                             auto numBlockedTermsMatched =
-                                msg.blockedTermsFound.count();
+                                msg.blockedTermsFound.size();
                             auto hideBlockedTerms =
                                 getSettings()
                                     ->streamerModeHideBlockedTermText &&
                                 getApp()->getStreamerMode()->isEnabled();
-                            if (!msg.blockedTermsFound.isEmpty())
+                            if (!msg.blockedTermsFound.empty())
                             {
                                 if (hideBlockedTerms)
                                 {
@@ -513,14 +513,16 @@ void TwitchIrcServer::initialize()
                                 }
                                 else
                                 {
+                                    QStringList blockedTerms(
+                                        msg.blockedTermsFound.begin(),
+                                        msg.blockedTermsFound.end());
                                     action.reason =
                                         u"matches %1 blocked term%2 \"%3\""_s
                                             .arg(numBlockedTermsMatched)
                                             .arg(numBlockedTermsMatched > 1
                                                      ? u"s"
                                                      : u"")
-                                            .arg(msg.blockedTermsFound.join(
-                                                u"\", \""));
+                                            .arg(blockedTerms.join(u"\", \""));
                                 }
                             }
                             else
diff --git a/src/providers/twitch/pubsubmessages/AutoMod.cpp b/src/providers/twitch/pubsubmessages/AutoMod.cpp
index 21c0be51..236b84a7 100644
--- a/src/providers/twitch/pubsubmessages/AutoMod.cpp
+++ b/src/providers/twitch/pubsubmessages/AutoMod.cpp
@@ -60,7 +60,7 @@ PubSubAutoModQueueMessage::PubSubAutoModQueueMessage(const QJsonObject &root)
             const auto termText = term.value("text").toString();
             if (!termText.isEmpty())
             {
-                this->blockedTermsFound.push_back(termText);
+                this->blockedTermsFound.insert(termText);
             }
         }
     }
diff --git a/src/providers/twitch/pubsubmessages/AutoMod.hpp b/src/providers/twitch/pubsubmessages/AutoMod.hpp
index a6147e7b..4312d523 100644
--- a/src/providers/twitch/pubsubmessages/AutoMod.hpp
+++ b/src/providers/twitch/pubsubmessages/AutoMod.hpp
@@ -6,6 +6,8 @@
 #include <QString>
 #include <QStringList>
 
+#include <set>
+
 namespace chatterino {
 
 struct PubSubAutoModQueueMessage {
@@ -41,7 +43,7 @@ struct PubSubAutoModQueueMessage {
     QString senderUserDisplayName;
     QColor senderUserChatColor;
 
-    QStringList blockedTermsFound;
+    std::set<QString> blockedTermsFound;
 
     PubSubAutoModQueueMessage() = default;
     explicit PubSubAutoModQueueMessage(const QJsonObject &root);