diff --git a/common/ddr_spd.c b/common/ddr_spd.c
index 0ba5eac..23df3e7 100644
--- a/common/ddr_spd.c
+++ b/common/ddr_spd.c
@@ -325,7 +325,7 @@
 		printf("Error module type\n");
 
 	printf("%-48s ", "DRAM Package ");
-	if ((s->mod_ranks & 0x10) == 1)
+	if ((s->mod_ranks & 0x10) != 0)
 		printf("Stack\n");
 	else
 		printf("Planar\n");