diff --git a/poky/meta/lib/oeqa/selftest/cases/multiconfig.py b/poky/meta/lib/oeqa/selftest/cases/multiconfig.py
index 39b92f2..baae9b4 100644
--- a/poky/meta/lib/oeqa/selftest/cases/multiconfig.py
+++ b/poky/meta/lib/oeqa/selftest/cases/multiconfig.py
@@ -17,7 +17,7 @@
         """
 
         config = """
-IMAGE_INSTALL_append_pn-core-image-full-cmdline = " multiconfig-image-packager-tiny multiconfig-image-packager-musl"
+IMAGE_INSTALL:append:pn-core-image-full-cmdline = " multiconfig-image-packager-tiny multiconfig-image-packager-musl"
 BBMULTICONFIG = "tiny musl"
 """
         self.write_config(config)
@@ -52,7 +52,7 @@
         self.write_config(config)
 
         testconfig = textwrap.dedent('''\
-                MCTESTVAR_append = "1"
+                MCTESTVAR:append = "1"
                 ''')
         self.write_config(testconfig, 'test')
 
@@ -64,7 +64,7 @@
         self.assertIn('MCTESTVAR=test1', result.output.splitlines())
 
         testconfig = textwrap.dedent('''\
-                MCTESTVAR_append = "2"
+                MCTESTVAR:append = "2"
                 ''')
         self.write_config(testconfig, 'test')