--- goffice/gtk/go-math-editor.c
+++ goffice/gtk/go-math-editor.c
@@ -23,6 +23,7 @@
 #include <goffice/goffice.h>
 
 #include <glib/gi18n-lib.h>
+#include <gsf/gsf-impl-utils.h>
 
 struct _GoMathEditor {
 	GtkBin		base;