diff --git a/Mk/defaults.mk b/Mk/defaults.mk
index f1c99812b..321de681a 100644
--- a/Mk/defaults.mk
+++ b/Mk/defaults.mk
@@ -40,6 +40,7 @@ CORE_COMMIT=	unknown 0 undefined
 _CORE_ARCH!=	uname -p
 CORE_ARCH?=	${_CORE_ARCH}
 
+# detect current runtime dependencies to unbreak development "make upgrade"
 .if exists(${PKG})
 _CORE_UPDATE!=	${PKG} query -g %n 'opnsense-update*'
 CORE_UPDATE?=	${_CORE_UPDATE:S/opnsense-update//g}