diff --git a/src/fe-gtk/fkeys.c b/src/fe-gtk/fkeys.c
index 146804d0..beacd532 100644
--- a/src/fe-gtk/fkeys.c
+++ b/src/fe-gtk/fkeys.c
@@ -1499,7 +1499,7 @@ key_action_tab_comp (GtkWidget *t, GdkEventKey *entry, char *d1, char *d2,
 		cursor_pos = g_utf8_pointer_to_offset(text, ch);
 		if (cursor_pos && (g_utf8_get_char_validated(ch, -1) == ':' || 
 					g_utf8_get_char_validated(ch, -1) == ',' ||
-					g_utf8_get_char_validated(ch, -1) == prefs.hex_completion_suffix[0]))
+					g_utf8_get_char_validated (ch, -1) == g_utf8_get_char_validated (prefs.hex_completion_suffix, -1)))
 		{
 			skip_len++;
 		}