diff --git a/src/corelib/text/qbytearraymatcher.h b/src/corelib/text/qbytearraymatcher.h
index d9ea638500..2a65a257ee 100644
--- a/src/corelib/text/qbytearraymatcher.h
+++ b/src/corelib/text/qbytearraymatcher.h
@@ -147,6 +147,7 @@ template <uint N>
 class QStaticByteArrayMatcher : QStaticByteArrayMatcherBase
 {
     char m_pattern[N];
+    // N includes the terminating '\0'!
     static_assert(N > 2, "QStaticByteArrayMatcher makes no sense for finding a single-char pattern");
 public:
     explicit constexpr QStaticByteArrayMatcher(const char (&patternToMatch)[N]) noexcept