diff --git a/lib/syskit/actions/profile.rb b/lib/syskit/actions/profile.rb
index 48a51bf7d..d8b457cb9 100644
--- a/lib/syskit/actions/profile.rb
+++ b/lib/syskit/actions/profile.rb
@@ -270,7 +270,7 @@ def resolved_dependency_injection
             end
 
             def to_s
-                name
+                name || "<anonymous profile>"
             end
 
             # Promote requirements taken from another profile to this profile
diff --git a/lib/syskit/droby/v5/droby_dump.rb b/lib/syskit/droby/v5/droby_dump.rb
index 6e5a75f8d..e33833fa6 100644
--- a/lib/syskit/droby/v5/droby_dump.rb
+++ b/lib/syskit/droby/v5/droby_dump.rb
@@ -308,7 +308,7 @@ def proxy(peer)
 
                         profile =
                             begin
-                                constant(@name)
+                                Object.const_get(@name)
                             rescue Exception
                                 Actions::Profile.new(@name)
                             end
diff --git a/test/droby/test_droby_dump.rb b/test/droby/test_droby_dump.rb
index ff042cfec..5a37f9447 100644
--- a/test/droby/test_droby_dump.rb
+++ b/test/droby/test_droby_dump.rb
@@ -187,8 +187,10 @@ def proxy(_peer)
                 it "returns the constant" do
                     droby = droby_local_marshaller.dump(Actions::Profile.new("AProfile"))
                     droby = Marshal.load(Marshal.dump(droby))
-                    flexmock(droby).should_receive(:constant).with("AProfile")
-                                   .and_return(profile = Actions::Profile.new)
+                    profile = Syskit::Actions::Profile.new
+                    flexmock(Object)
+                        .should_receive(:const_get).with("AProfile")
+                        .and_return(profile)
                     unmarshalled = droby_remote_marshaller.local_object(droby)
                     assert_same profile, unmarshalled
                 end