diff --git a/src/main/perl/CCfg.pm b/src/main/perl/CCfg.pm
index de634ad6..ca5763f9 100755
--- a/src/main/perl/CCfg.pm
+++ b/src/main/perl/CCfg.pm
@@ -60,6 +60,7 @@ Readonly::Hash my %DEFAULT_CFG => {
     "debug"            => undef,
     "force"            => undef,
     "get_timeout"      => 30,
+    "json_typed"       => 0,
     "keep_old"         => 2,
     "key_file"         => undef,
     "lock_retries"     => 3,
diff --git a/src/main/perl/Fetch.pm b/src/main/perl/Fetch.pm
index 80ef3198..964805dd 100644
--- a/src/main/perl/Fetch.pm
+++ b/src/main/perl/Fetch.pm
@@ -478,7 +478,13 @@ sub choose_interpreter
     my $tree;
     if ($self->{PROFILE_URL} =~ m{json(?:\.gz)?$}) {
         $tree = decode_json($profile);
-        return ('EDG::WP4::CCM::JSONProfileSimple', ['profile', $tree]);
+        my $module;
+        if ($self->{JSON_TYPED}) {
+            $module = 'EDG::WP4::CCM::JSONProfileTyped';
+        } else {
+            $module = 'EDG::WP4::CCM::JSONProfileSimple';
+        }
+        return ($module, ['profile', $tree]);
     }
 
     my $xmlParser = new XML::Parser(Style => 'Tree');
diff --git a/src/test/perl/test-ccfg.t b/src/test/perl/test-ccfg.t
index 1bfb75d7..4b224107 100755
--- a/src/test/perl/test-ccfg.t
+++ b/src/test/perl/test-ccfg.t
@@ -102,7 +102,7 @@ while (my ($k, $v) = each %expected) {
 
 # Hard test for possible values (sorted)
 is_deeply(\@CFG_KEYS, [qw(base_url ca_dir ca_file cache_root cert_file
-    context dbformat debug force get_timeout keep_old
+    context dbformat debug force get_timeout json_typed keep_old
     key_file lock_retries lock_wait preprocessor profile profile_failover
     purge_time retrieve_retries retrieve_wait trust world_readable
     )], "CFG_KEYS exports all possible configuration keys");