diff --git a/Documentation/aoe/mkshelf.sh b/Documentation/aoe/mkshelf.sh
index 8bacf9f2c7c..32615814271 100644
--- a/Documentation/aoe/mkshelf.sh
+++ b/Documentation/aoe/mkshelf.sh
@@ -8,13 +8,15 @@ fi
 n_partitions=${n_partitions:-16}
 dir=$1
 shelf=$2
+nslots=16
+maxslot=`echo $nslots 1 - p | dc`
 MAJOR=152
 
 set -e
 
-minor=`echo 10 \* $shelf \* $n_partitions | bc`
+minor=`echo $nslots \* $shelf \* $n_partitions | bc`
 endp=`echo $n_partitions - 1 | bc`
-for slot in `seq 0 9`; do
+for slot in `seq 0 $maxslot`; do
 	for part in `seq 0 $endp`; do
 		name=e$shelf.$slot
 		test "$part" != "0" && name=${name}p$part
diff --git a/drivers/block/aoe/aoe.h b/drivers/block/aoe/aoe.h
index 721ba808604..599951dc2c3 100644
--- a/drivers/block/aoe/aoe.h
+++ b/drivers/block/aoe/aoe.h
@@ -7,12 +7,12 @@
  * default is 16, which is 15 partitions plus the whole disk
  */
 #ifndef AOE_PARTITIONS
-#define AOE_PARTITIONS 16
+#define AOE_PARTITIONS (16)
 #endif
 
-#define SYSMINOR(aoemajor, aoeminor) ((aoemajor) * 10 + (aoeminor))
-#define AOEMAJOR(sysminor) ((sysminor) / 10)
-#define AOEMINOR(sysminor) ((sysminor) % 10)
+#define SYSMINOR(aoemajor, aoeminor) ((aoemajor) * NPERSHELF + (aoeminor))
+#define AOEMAJOR(sysminor) ((sysminor) / NPERSHELF)
+#define AOEMINOR(sysminor) ((sysminor) % NPERSHELF)
 #define WHITESPACE " \t\v\f\n"
 
 enum {
@@ -83,7 +83,7 @@ enum {
 
 enum {
 	MAXATADATA = 1024,
-	NPERSHELF = 10,
+	NPERSHELF = 16,		/* number of slots per shelf address */
 	FREETAG = -1,
 	MIN_BUFS = 8,
 };