diff --git a/init.cfg b/init.cfg
index 093cd85..a68edf2 100644
--- a/init.cfg
+++ b/init.cfg
@@ -502,6 +502,18 @@ skip_if_setgid_()
   esac
 }
 
+# Skip if files are created with a different group to the current user
+# This can happen due to a setgid dir, or extended attributes were
+# reported to trigger this on Mac OS X.
+skip_if_nondefault_group_()
+{
+  touch grp.$$
+  gen_ug=$(stat -c '%u:%g' grp.$$)
+  rm grp.$$
+  test "$gen_ug" = "$(id -ru):$(id -rg)" ||
+    skip_ 'Files are created with a different gid'
+}
+
 skip_if_mcstransd_is_running_()
 {
   test $# = 0 || framework_failure_
diff --git a/tests/install/install-C-root.sh b/tests/install/install-C-root.sh
index d8a8d84..6e6d7eb 100755
--- a/tests/install/install-C-root.sh
+++ b/tests/install/install-C-root.sh
@@ -20,6 +20,7 @@
 print_ver_ ginstall
 require_root_
 skip_if_setgid_
+skip_if_nondefault_group_
 
 u1=1
 u2=2
diff --git a/tests/install/install-C-selinux.sh b/tests/install/install-C-selinux.sh
index 8513d50..ce9e0c3 100755
--- a/tests/install/install-C-selinux.sh
+++ b/tests/install/install-C-selinux.sh
@@ -19,7 +19,7 @@
 . "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
 print_ver_ ginstall
 require_selinux_
-
+skip_if_nondefault_group_
 
 echo test > a || framework_failure_
 chcon -u system_u a || skip_ "chcon doesn't work"
diff --git a/tests/install/install-C.sh b/tests/install/install-C.sh
index 7d3582c..7c0c7fb 100755
--- a/tests/install/install-C.sh
+++ b/tests/install/install-C.sh
@@ -19,6 +19,7 @@
 . "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
 print_ver_ ginstall
 skip_if_setgid_
+skip_if_nondefault_group_
 
 mode1=0644
 mode2=0755