diff --git a/src/base-typemaps.i b/src/base-typemaps.i
index 0c09e4d77f..cc4255af48 100644
--- a/src/base-typemaps.i
+++ b/src/base-typemaps.i
@@ -20,6 +20,7 @@ typedef void * gpointer;
 typedef int gint;
 typedef int time_t;
 typedef unsigned int guint;
+typedef double gdouble;
 typedef char * URLType;
 typedef char gchar;