diff --git a/code/nel/tools/3d/object_viewer_qt/src/extension_system/plugin_spec.cpp b/code/nel/tools/3d/object_viewer_qt/src/extension_system/plugin_spec.cpp
index 5c4e04ecb..1e3ec0182 100644
--- a/code/nel/tools/3d/object_viewer_qt/src/extension_system/plugin_spec.cpp
+++ b/code/nel/tools/3d/object_viewer_qt/src/extension_system/plugin_spec.cpp
@@ -61,14 +61,19 @@ PluginSpec::PluginSpec()
 	  m_plugin(0),
 	  m_pluginManager(0)
 {
-#ifdef Q_OS_WIN
-#	ifdef DEBUG
+// Compilation mode specific suffixes
+#ifdef NL_OS_WINDOWS
+#	if defined(NL_DEBUG)
 	m_suffix = "_d.dll";
-#	else
+#	elif defined(NL_RELEASE)
 	m_suffix = "_r.dll";
+#	else
+#		error "Unknown compilation mode, can't build suffix"
 #	endif
-#else
+#elif defined (NL_OS_UNIX)
 	m_suffix = ".so";
+#else
+#	error "You must define the lib suffix for your platform"
 #endif
 }