diff -aur nautilus/libnautilus-private/nautilus-file-operations.c nautilus.orig/libnautilus-private/nautilus-file-operations.c
--- nautilus/libnautilus-private/nautilus-file-operations.c	2016-03-17 17:08:29.914139480 +0100
+++ nautilus.orig/libnautilus-private/nautilus-file-operations.c	2016-03-17 16:58:57.000000000 +0100
@@ -1570,8 +1570,8 @@
 			                              seconds_count_format_time_units (remaining_time));
                         files_per_second_message = ngettext ("(%d file/sec)",
 	                                                     "(%d files/sec)",
-                                                              (int)(transfer_rate + 0.5));
-                        concat_detail = g_strconcat (time_left_message, " ", files_per_second_message, NULL);
+                                                              (int) transfer_rate + 0.5);
+                        concat_detail = g_strconcat (time_left_message, files_per_second_message, NULL);
 
 	                details = f (concat_detail,
                                      transfer_info->num_files + 1, source_info->num_files,
