diff --git a/src/gui_gtk.c b/src/gui_gtk.c
index 8686381..c015d7e 100644
--- a/src/gui_gtk.c
+++ b/src/gui_gtk.c
@@ -51,6 +51,9 @@
 # ifdef _
 #  undef _
 # endif
+# ifdef ngettext
+#  undef ngettext
+# endif
 # ifdef N_
 #  undef N_
 # endif