diff --git a/recipes-openharmony/openharmony/openharmony-standard_3.1.bb b/recipes-openharmony/openharmony/openharmony-standard_3.1.bb
index 3450f15ae778e2567cd113d591fc40621b5e0694..b53c5c92255f69524426a210daa94c434a51c1a9 100644
--- a/recipes-openharmony/openharmony/openharmony-standard_3.1.bb
+++ b/recipes-openharmony/openharmony/openharmony-standard_3.1.bb
@@ -20,6 +20,8 @@ DEPENDS += "ruby-native"
 DEPENDS += "hapsigner-native"
 DEPENDS += "packing-tool-native"
 
+# libfts.a is needed by //third_party/selinux:libselinux in order to
+# avoid the use of //third_party/FreeBSD.
 DEPENDS += "fts"
 
 FILESEXTRAPATHS:prepend := "${THISDIR}/openharmony-${OPENHARMONY_VERSION}:"