diff --git a/lua/rsvg.pkg b/lua/rsvg.pkg
index 10092783..4e50dfb6 100644
--- a/lua/rsvg.pkg
+++ b/lua/rsvg.pkg
@@ -61,8 +61,8 @@ typedef struct _RsvgPositionData RsvgPositionData;
 struct _RsvgDimensionData {
     int width;
     int height;
-    gdouble em;
-    gdouble ex;
+    double em;
+    double ex;
 };
 
 /**
@@ -81,9 +81,9 @@ void rsvg_handle_set_dpi	(RsvgHandle * handle, double dpi);
 void rsvg_handle_set_dpi_x_y	(RsvgHandle * handle, double dpi_x, double dpi_y);
 
 RsvgHandle  *rsvg_handle_new		(void);
-gboolean     rsvg_handle_write		(RsvgHandle * handle, const guchar * buf, 
-                                     gsize count, GError ** error);
-gboolean     rsvg_handle_close		(RsvgHandle * handle, GError ** error);
+int          rsvg_handle_write		(RsvgHandle * handle, const unsigned char * buf, 
+                                     unsigned long count, GError ** error);
+int          rsvg_handle_close		(RsvgHandle * handle, GError ** error);
 GdkPixbuf   *rsvg_handle_get_pixbuf	(RsvgHandle * handle);
 GdkPixbuf   *rsvg_handle_get_pixbuf_sub (RsvgHandle * handle, const char *id);
 
@@ -92,17 +92,17 @@ void         rsvg_handle_set_base_uri (RsvgHandle * handle, const char *base_uri
 
 void rsvg_handle_get_dimensions (RsvgHandle * handle, RsvgDimensionData * dimension_data);
 
-gboolean rsvg_handle_get_dimensions_sub (RsvgHandle * handle, RsvgDimensionData * dimension_data, const char *id);
-gboolean rsvg_handle_get_position_sub (RsvgHandle * handle, RsvgPositionData * position_data, const char *id);
+int      rsvg_handle_get_dimensions_sub (RsvgHandle * handle, RsvgDimensionData * dimension_data, const char *id);
+int      rsvg_handle_get_position_sub (RsvgHandle * handle, RsvgPositionData * position_data, const char *id);
 
-gboolean rsvg_handle_has_sub (RsvgHandle * handle, const char *id);
+int      rsvg_handle_has_sub (RsvgHandle * handle, const char *id);
 
 RsvgHandle *rsvg_handle_new_with_flags (RsvgHandleFlags flags);
 
 void        rsvg_handle_set_base_gfile (RsvgHandle *handle,
                                         GFile      *base_file);
 
-gboolean    rsvg_handle_read_stream_sync (RsvgHandle   *handle,
+int         rsvg_handle_read_stream_sync (RsvgHandle   *handle,
                                           GInputStream *stream,
                                           GCancellable *cancellable,
                                           GError      **error);
@@ -118,11 +118,11 @@ RsvgHandle *rsvg_handle_new_from_stream_sync (GInputStream   *input_stream,
                                               GCancellable   *cancellable,
                                               GError        **error);
 
-RsvgHandle *rsvg_handle_new_from_data (const guint8 * data, gsize data_len, GError ** error);
-RsvgHandle *rsvg_handle_new_from_file (const gchar * file_name, GError ** error);
+RsvgHandle *rsvg_handle_new_from_data (const unsigned char * data, unsigned long data_len, GError ** error);
+RsvgHandle *rsvg_handle_new_from_file (const char * file_name, GError ** error);
 
-gboolean    rsvg_handle_render_cairo     (RsvgHandle * handle, cairo_t * cr);
-gboolean    rsvg_handle_render_cairo_sub (RsvgHandle * handle, cairo_t * cr, const char *id);
+int         rsvg_handle_render_cairo     (RsvgHandle * handle, cairo_t * cr);
+int         rsvg_handle_render_cairo_sub (RsvgHandle * handle, cairo_t * cr, const char *id);
 
 void g_type_init(void);
 void g_object_unref(gpointer object);