diff --git a/doc/config/macros.qdocconf b/doc/config/macros.qdocconf
index b3461ad939f..916c9623a18 100644
--- a/doc/config/macros.qdocconf
+++ b/doc/config/macros.qdocconf
@@ -14,6 +14,7 @@ macro.key               = "\\b"
 macro.menu              = "\\b"
 macro.macos             = "macOS"
 macro.note              = "\\b{Note:}"
+macro.nullptr           = "\\c{nullptr}"
 macro.oslash.HTML       = "ø"
 macro.ouml.HTML         = "ö"
 macro.B2Q               = "Boot to Qt"