diff --git a/Common/GmshMessage.cpp b/Common/GmshMessage.cpp
index c5771d530278685368b13f84a3685ecd8b9fd493..d94728cd0c5155ed039a6db9a4b51b7a95e47dac 100644
--- a/Common/GmshMessage.cpp
+++ b/Common/GmshMessage.cpp
@@ -1102,9 +1102,14 @@ void Msg::RunOnelabClient(const std::string &name, const std::string &command)
     o.setVisible(false);
     o.setNeverChanged(true);
     onelab::server::instance()->set(o);
+#if defined(HAVE_FLTK)
     Msg::Info("Creating new ONELAB client `%s' (%s)", name.c_str(), command.c_str());
     client = new gmshLocalNetworkClient(name, command);
     client->run();
+#else
+    Msg::Error("Cannot create ONELAB client without FLTK");
+    return;
+#endif
   }
   onelab::string o(name + "/Action", "compute");
   o.setVisible(false);
diff --git a/Plugin/DuplicateBoundaries.cpp b/Plugin/DuplicateBoundaries.cpp
index d686d9651109eab4aa4d72f4d60ca3817bb320b9..04fdb1694376e414cb712839dd5f60345b6538d4 100644
--- a/Plugin/DuplicateBoundaries.cpp
+++ b/Plugin/DuplicateBoundaries.cpp
@@ -18,9 +18,7 @@
 #include "Context.h"
 
 StringXNumber DuplicateBoundariesOptions_Number[] = {
-//  {GMSH_FULLRC, "Dimension", NULL, 1.},
-//  {GMSH_FULLRC, "PhysicalGroup", NULL, 1.},
-//  {GMSH_FULLRC, "OpenBoundaryPhysicalGroup", NULL, 0.},
+  {GMSH_FULLRC, "Dummy", NULL, 1.},
 };
 
 extern "C"
@@ -33,18 +31,7 @@ extern "C"
 
 std::string GMSH_DuplicateBoundariesPlugin::getHelp() const
 {
-  return "Plugin(Crack) creates a crack around the physical "
-    "group `PhysicalGroup' of dimension `Dimension' (1 or 2). "
-    "The plugin duplicates the vertices and the elements on "
-    "the crack and stores them in a new discrete curve "
-    "(`Dimension' = 1) or surface (`Dimension' = 2). The "
-    "elements touching the crack on the negative side "
-    "are modified to use the newly generated vertices."
-    "If `OpenBoundaryPhysicalGroup' is given (> 0), its "
-    "vertices are duplicated and the crack will be left "
-    "open on that (part of the) boundary. Otherwise, the "
-    "lips of the crack are sealed, i.e., its vertices are "
-    "not duplicated.";
+  return "Plugin(DuplicateBoundaries) is not documented yet.";
 }
 
 int GMSH_DuplicateBoundariesPlugin::getNbOptions() const