diff -r a06ade737f26 -r 77536a48b4be libpurple/protocols/facebook/id.h
--- a/libpurple/protocols/facebook/id.h	Wed Dec 16 14:04:26 2015 -0500
+++ b/libpurple/protocols/facebook/id.h	Wed Dec 16 15:13:36 2015 -0500
@@ -93,7 +93,7 @@
  *
  * Return: #TRUE if the string is an #FbId, otherwise #FALSE.
  */
-#define FB_ID_IS_STR(s) fb_util_str_is(s, G_ASCII_DIGIT)
+#define FB_ID_IS_STR(s) fb_util_strtest(s, G_ASCII_DIGIT)
 
 /**
  * FB_ID_TO_STR: