diff --git a/meta/classes/buildhistory.bbclass b/meta/classes/buildhistory.bbclass
index e8cdee57d0..8b5d5c214c 100644
--- a/meta/classes/buildhistory.bbclass
+++ b/meta/classes/buildhistory.bbclass
@@ -17,7 +17,7 @@ BUILDHISTORY_COMMIT ?= "0"
 BUILDHISTORY_COMMIT_AUTHOR ?= "buildhistory <buildhistory@${DISTRO}>"
 BUILDHISTORY_PUSH_REPO ?= ""
 
-SSTATEPOSTINSTFUNCS += "buildhistory_emit_pkghistory"
+SSTATEPOSTINSTFUNCS_append = " buildhistory_emit_pkghistory"
 # We want to avoid influence the signatures of sstate tasks - first the function itself:
 sstate_install[vardepsexclude] += "buildhistory_emit_pkghistory"
 # then the value added to SSTATEPOSTINSTFUNCS: