diff --git a/glib/gfileutils.c b/glib/gfileutils.c
index 81966b84b..fc101bdb2 100644
--- a/glib/gfileutils.c
+++ b/glib/gfileutils.c
@@ -1826,15 +1826,15 @@ g_format_size (guint64 size)
 /**
  * GFormatSizeFlags:
  * @G_FORMAT_SIZE_DEFAULT: behave the same as g_format_size()
+ * @G_FORMAT_SIZE_LONG_FORMAT: include the exact number of bytes as part
+ *                             of the returned string.  For example,
+ *                             "45.6 kB (45,612 bytes)".
  * @G_FORMAT_SIZE_IEC_UNITS: use IEC (base 1024) units with "KiB"-style
  *                           suffixes.  IEC units should only be used
  *                           for reporting things with a strong "power
  *                           of 2" basis, like RAM sizes or RAID stripe
  *                           sizes.  Network and storage sizes should
  *                           be reported in the normal SI units.
- * @G_FORMAT_SIZE_LONG_FORMAT: include the exact number of bytes as part
- *                             of the returned string.  For example,
- *                             "45.6 kB (45,612 bytes)".
  *
  * Flags to modify the format of the string returned by
  * g_format_size_full().
diff --git a/glib/gfileutils.h b/glib/gfileutils.h
index 0e382afd1..1d7f4dc63 100644
--- a/glib/gfileutils.h
+++ b/glib/gfileutils.h
@@ -112,9 +112,9 @@ gint    g_file_open_tmp      (const gchar  *tmpl,
 
 typedef enum
 {
-  G_FORMAT_SIZE_DEFAULT,
-  G_FORMAT_SIZE_IEC_UNITS,
-  G_FORMAT_SIZE_LONG_FORMAT
+  G_FORMAT_SIZE_DEFAULT     = 0,
+  G_FORMAT_SIZE_LONG_FORMAT = 1 << 0,
+  G_FORMAT_SIZE_IEC_UNITS   = 1 << 1
 } GFormatSizeFlags;
 
 gchar * g_format_size_full   (guint64          size,