diff --git a/dsf-gdb/org.eclipse.cdt.dsf.gdb.ui/src/org/eclipse/cdt/dsf/gdb/internal/ui/osview/Messages.properties b/dsf-gdb/org.eclipse.cdt.dsf.gdb.ui/src/org/eclipse/cdt/dsf/gdb/internal/ui/osview/Messages.properties
index f57587aa280..79bea302796 100644
--- a/dsf-gdb/org.eclipse.cdt.dsf.gdb.ui/src/org/eclipse/cdt/dsf/gdb/internal/ui/osview/Messages.properties
+++ b/dsf-gdb/org.eclipse.cdt.dsf.gdb.ui/src/org/eclipse/cdt/dsf/gdb/internal/ui/osview/Messages.properties
@@ -9,7 +9,7 @@
 #     Vladimir Prus (Mentor Graphics) - initial API and implementation
 ###############################################################################
 OSView_3=Refresh
-OSView_4=No debug session is selected.
+OSView_4=Invalid debug session selected.
 OSView_5=Please select resource class.
 OSView_6=Fetching data...
 OSView_7=No data has been fetched yet. <a href="{0}">Fetch now</a>.