diff --git a/src/spellcheckhighlighter.cpp b/src/spellcheckhighlighter.cpp
index bafde4a29..699f05a66 100644
--- a/src/spellcheckhighlighter.cpp
+++ b/src/spellcheckhighlighter.cpp
@@ -115,6 +115,10 @@ static bool isSpellcheckable(const QStringRef &token)
     if (!token.at(0).isLetter() || token.at(0).isUpper() || token.startsWith(QStringLiteral("http"))) {
         return false;
     }
+    // part of a slash command
+    if (token.contains("rainbowme") || token.contains("lenny")) {
+        return false;
+    }
     // TODO ignore urls and uppercase?
     return true;
 }
@@ -126,6 +130,11 @@ void SpellcheckHighlighter::highlightBlock(const QString &text)
         setFormat(0, text.length(), mQuoteFormat);
         return;
     }
+    // Don't spell check certain commands
+    if (text.startsWith("/join") || text.startsWith("/part") || text.startsWith("/invite")) {
+        setFormat(0, text.length(), QTextCharFormat{});
+        return;
+    }
 #ifndef Q_OS_ANDROID
     for (const auto &sentenceRef : split(QTextBoundaryFinder::Sentence, text)) {
         // Avoid spellchecking quotes