keys need hash, not hash element

diff --git a/org.glite.lb/configure b/org.glite.lb/configure
index 57c5f9a..c9b0ebd 100755 (executable)
--- a/org.glite.lb/configure
+++ b/org.glite.lb/configure
@@ -1273,7 +1273,7 @@ package.SRPMSLocation = \${moduleDir}/RPMTMP/SRPMS\n";
                print C "$package_description$package_summary\n";
        }
 
-       for my $platform ('default', keys $project{supported_platforms}) {
+       for my $platform ('default', keys %{$project{supported_platforms}}) {
                my $used = 0;
 
                for (@{$need_externs{"$subsys.$module"}},@{$need_jars{"$subsys.$module"}}) {