diff --git a/src/gui_gtk_x11.c b/src/gui_gtk_x11.c
index 514ac9e..71bcd6a 100644
--- a/src/gui_gtk_x11.c
+++ b/src/gui_gtk_x11.c
@@ -35,6 +35,9 @@
 # ifdef _
 #  undef _
 # endif
+# ifdef ngettext
+#  undef ngettext
+# endif
 # ifdef N_
 #  undef N_
 # endif