--- a/gstreamer_core/gst/gstcaps.h	Wed Mar 31 22:03:18 2010 +0300
+++ b/gstreamer_core/gst/gstcaps.h	Tue Aug 31 15:30:33 2010 +0300
@@ -296,13 +296,13 @@
 #endif
 
 void              gst_caps_set_simple              (GstCaps       *caps,
-                                                    char          *field, ...) G_GNUC_NULL_TERMINATED;
+                                                    const char    *field, ...) G_GNUC_NULL_TERMINATED;
 #ifdef __SYMBIAN32__
 IMPORT_C
 #endif
 
 void              gst_caps_set_simple_valist       (GstCaps       *caps,
-                                                    char          *field,
+                                                    const char    *field,
                                                     va_list        varargs);
 
 /* tests */