diff --git a/poky/meta/classes/buildhistory.bbclass b/poky/meta/classes/buildhistory.bbclass
index 55b12d7..5099e70 100644
--- a/poky/meta/classes/buildhistory.bbclass
+++ b/poky/meta/classes/buildhistory.bbclass
@@ -45,14 +45,14 @@
 BUILDHISTORY_TAG ?= "build"
 BUILDHISTORY_PATH_PREFIX_STRIP ?= ""
 
-SSTATEPOSTINSTFUNCS_append = " buildhistory_emit_pkghistory"
+SSTATEPOSTINSTFUNCS:append = " buildhistory_emit_pkghistory"
 # We want to avoid influencing the signatures of sstate tasks - first the function itself:
 sstate_install[vardepsexclude] += "buildhistory_emit_pkghistory"
 # then the value added to SSTATEPOSTINSTFUNCS:
 SSTATEPOSTINSTFUNCS[vardepvalueexclude] .= "| buildhistory_emit_pkghistory"
 
 # Similarly for our function that gets the output signatures
-SSTATEPOSTUNPACKFUNCS_append = " buildhistory_emit_outputsigs"
+SSTATEPOSTUNPACKFUNCS:append = " buildhistory_emit_outputsigs"
 sstate_installpkgdir[vardepsexclude] += "buildhistory_emit_outputsigs"
 SSTATEPOSTUNPACKFUNCS[vardepvalueexclude] .= "| buildhistory_emit_outputsigs"
 
@@ -676,17 +676,17 @@
 IMAGE_POSTPROCESS_COMMAND[vardepsexclude] += "buildhistory_get_imageinfo"
 
 # We want these to be the last run so that we get called after complementary package installation
-POPULATE_SDK_POST_TARGET_COMMAND_append = " buildhistory_list_installed_sdk_target;"
-POPULATE_SDK_POST_TARGET_COMMAND_append = " buildhistory_get_sdk_installed_target;"
+POPULATE_SDK_POST_TARGET_COMMAND:append = " buildhistory_list_installed_sdk_target;"
+POPULATE_SDK_POST_TARGET_COMMAND:append = " buildhistory_get_sdk_installed_target;"
 POPULATE_SDK_POST_TARGET_COMMAND[vardepvalueexclude] .= "| buildhistory_list_installed_sdk_target;| buildhistory_get_sdk_installed_target;"
 POPULATE_SDK_POST_TARGET_COMMAND[vardepsexclude] += "buildhistory_list_installed_sdk_target buildhistory_get_sdk_installed_target"
 
-POPULATE_SDK_POST_HOST_COMMAND_append = " buildhistory_list_installed_sdk_host;"
-POPULATE_SDK_POST_HOST_COMMAND_append = " buildhistory_get_sdk_installed_host;"
+POPULATE_SDK_POST_HOST_COMMAND:append = " buildhistory_list_installed_sdk_host;"
+POPULATE_SDK_POST_HOST_COMMAND:append = " buildhistory_get_sdk_installed_host;"
 POPULATE_SDK_POST_HOST_COMMAND[vardepvalueexclude] .= "| buildhistory_list_installed_sdk_host;| buildhistory_get_sdk_installed_host;"
 POPULATE_SDK_POST_HOST_COMMAND[vardepsexclude] += "buildhistory_list_installed_sdk_host buildhistory_get_sdk_installed_host"
 
-SDK_POSTPROCESS_COMMAND_append = " buildhistory_get_sdkinfo ; buildhistory_get_extra_sdkinfo; "
+SDK_POSTPROCESS_COMMAND:append = " buildhistory_get_sdkinfo ; buildhistory_get_extra_sdkinfo; "
 SDK_POSTPROCESS_COMMAND[vardepvalueexclude] .= "| buildhistory_get_sdkinfo ; buildhistory_get_extra_sdkinfo; "
 SDK_POSTPROCESS_COMMAND[vardepsexclude] += "buildhistory_get_sdkinfo buildhistory_get_extra_sdkinfo"