diff --git a/meta/classes-recipe/populate_sdk_ext.bbclass b/meta/classes-recipe/populate_sdk_ext.bbclass
index 36a3e9c836..2859320ddf 100644
--- a/meta/classes-recipe/populate_sdk_ext.bbclass
+++ b/meta/classes-recipe/populate_sdk_ext.bbclass
@@ -317,15 +317,10 @@ def write_local_conf(d, baseoutpath, derivative, core_meta_subdir, uninative_che
                 return origvalue, op, 0, True
         varlist = ['[^#=+ ]*']
         oldlines = []
-        if os.path.exists(builddir + '/conf/site.conf'):
-            with open(builddir + '/conf/site.conf', 'r') as f:
-                oldlines += f.readlines()
-        if os.path.exists(builddir + '/conf/auto.conf'):
-            with open(builddir + '/conf/auto.conf', 'r') as f:
-                oldlines += f.readlines()
-        if os.path.exists(builddir + '/conf/local.conf'):
-            with open(builddir + '/conf/local.conf', 'r') as f:
-                oldlines += f.readlines()
+        for conffile in ['site.conf', 'auto.conf', 'toolcfg.conf', 'local.conf']:
+            if os.path.exists(builddir + '/conf/' + conffile):
+                with open(builddir + '/conf/' + conffile, 'r') as f:
+                    oldlines += f.readlines()
         (updated, newlines) = bb.utils.edit_metadata(oldlines, varlist, handle_var)
 
         with open(baseoutpath + '/conf/local.conf', 'w') as f: