diff --git a/common/cmd_mem.c b/common/cmd_mem.c
index 3e22598..3918678 100644
--- a/common/cmd_mem.c
+++ b/common/cmd_mem.c
@@ -555,7 +555,11 @@
 	vu_long	temp;
 	vu_long	anti_pattern;
 	vu_long	num_words;
+#if defined(CFG_MEMTEST_SCRATCH)
+	vu_long *dummy = (vu_long*)CFG_MEMTEST_SCRATCH;
+#else
 	vu_long *dummy = NULL;
+#endif
 	int	j;
 	int iterations = 1;