diff --git a/src/Conn.cc b/src/Conn.cc
index 8510dc192b..2e53c8184f 100644
--- a/src/Conn.cc
+++ b/src/Conn.cc
@@ -258,15 +258,6 @@ analyzer::Analyzer* Connection::FindAnalyzer(const zeek::Tag& tag) {
 
 analyzer::Analyzer* Connection::FindAnalyzer(const char* name) { return adapter->FindChild(name); }
 
-void Connection::AppendAddl(const char* str) {
-    const auto& cv = GetVal();
-
-    const char* old = cv->GetFieldAs<StringVal>(6)->CheckString();
-    const char* format = *old ? "%s %s" : "%s%s";
-
-    cv->Assign(6, util::fmt(format, old, str));
-}
-
 void Connection::Match(detail::Rule::PatternType type, const u_char* data, int len, bool is_orig, bool bol, bool eol,
                        bool clear_state) {
     if ( primary_PIA )
diff --git a/src/Conn.h b/src/Conn.h
index f6ec77e59a..67f41dc68d 100644
--- a/src/Conn.h
+++ b/src/Conn.h
@@ -145,12 +145,6 @@ public:
      */
     const RecordValPtr& GetVal() override;
 
-    /**
-     * Append additional entries to the history field in the connection record.
-     */
-    [[deprecated("Remove in v7.1 - Appears unused and named rough. Use CheckHistory() or AddHistory() instead.")]] void
-    AppendAddl(const char* str);
-
     void Match(detail::Rule::PatternType type, const u_char* data, int len, bool is_orig, bool bol, bool eol,
                bool clear_state);