diff --git a/dev-ml/num/num-1.4-r1.ebuild b/dev-ml/num/num-1.4-r1.ebuild
index 1d40da0b807b6..39defb4f3131a 100644
--- a/dev-ml/num/num-1.4-r1.ebuild
+++ b/dev-ml/num/num-1.4-r1.ebuild
@@ -3,6 +3,7 @@
 
 EAPI=7
 
+# Not using dune for now, bug #775119
 inherit findlib
 
 DESCRIPTION="Library for arbitrary-precision integer and rational arithmetic"