diff --git a/src/frontends/qt4/GuiApplication.cpp b/src/frontends/qt4/GuiApplication.cpp
index ea5241cdeb..fdacceea51 100644
--- a/src/frontends/qt4/GuiApplication.cpp
+++ b/src/frontends/qt4/GuiApplication.cpp
@@ -689,6 +689,7 @@ public:
 		// Already in po: "Cancel", "&Cancel"
 		_("Apply"); // Already in po: "&Apply"
 		_("Reset"); // Already in po: "&Reset" "R&eset" "Rese&t"
+		_("Open");
 
 		docstring s = getGuiMessages().getIfFound(sourceText);
 		// This test should eventually be removed when translations are updated