diff --git a/src/cgi.cpp b/src/cgi.cpp
index 87b8113..921c1e9 100644
--- a/src/cgi.cpp
+++ b/src/cgi.cpp
@@ -77,6 +77,7 @@ entry_type parse_formdata()
     }
 
     entry.instance = cgi("instance");
+
     if (!cgi("tags").empty()) // Old form.
     {
         entry.tags = string_to_vector(cgi("tags"));
@@ -87,6 +88,8 @@ entry_type parse_formdata()
     }
     transform(entry.tags.begin(), entry.tags.end(), entry.tags.begin(),
               [](const auto &tag) { return tolower(tag); });
+    add_tags(entry);
+
     if (!cgi("receipts").empty()) // Old form.
     {
         entry.receipts = string_to_vector(cgi("receipts"));
@@ -95,6 +98,7 @@ entry_type parse_formdata()
     {
         entry.receipts = get_array("receipts[]");
     }
+
     entry.description = cgi("description");
     entry.report_time = time::to_string(system_clock::now());
 
@@ -237,6 +241,17 @@ bool is_spam(const entry_type &entry)
     return false;
 }
 
+void add_tags(entry_type &entry)
+{
+    for (const auto &tag : entry.tags)
+    {
+        if (tag == "nazism")
+        {
+            entry.tags.emplace_back("fascism");
+        }
+    }
+}
+
 } // namespace FediBlock::cgi
 
 const char *SpamException::what() const noexcept
diff --git a/src/cgi.hpp b/src/cgi.hpp
index 9929cf3..8c4ce51 100644
--- a/src/cgi.hpp
+++ b/src/cgi.hpp
@@ -56,6 +56,15 @@ bool captcha_valid(std::uint8_t id, string_view answer);
 
 bool is_spam(const entry_type &entry);
 
+/*!
+ *  @brief  Add automatic tags.
+ *
+ *  Example: If tag “nazism” is present, add “fascism”.
+ *
+ *  @since  0.1.0
+ */
+void add_tags(entry_type &entry);
+
 } // namespace FediBlock::cgi
 
 class SpamException : public std::exception