diff --git a/gcc/gcc.c b/gcc/gcc.c
index 90da0f010d5..da3bdc5bf45 100644
--- a/gcc/gcc.c
+++ b/gcc/gcc.c
@@ -3653,7 +3653,7 @@ do_spec_1 (spec, inswitch, soft_matched_part)
 			t->length = p - suffix;
 			t->suffix = save_string (suffix, p - suffix);
 			t->unique = (c != 'g');
-			temp_filename = make_temp_file (suffix);
+			temp_filename = make_temp_file (t->suffix);
 		      }
 		    temp_filename_length = strlen (temp_filename);
 		    t->filename = temp_filename;