diff --git a/drivers/scsi/ibmmca.c b/drivers/scsi/ibmmca.c
index 9c1e6a5b5af0ab9755f4fd69cda41f8fce91b9ca..9a4b69d4f4eb0d80c47117963cecbef3b2a1ebc2 100644
--- a/drivers/scsi/ibmmca.c
+++ b/drivers/scsi/ibmmca.c
@@ -2336,7 +2336,7 @@ static int option_setup(char *str)
 	char *cur = str;
 	int i = 1;
 
-	while (cur && isdigit(*cur) && i <= IM_MAX_HOSTS) {
+	while (cur && isdigit(*cur) && i < IM_MAX_HOSTS) {
 		ints[i++] = simple_strtoul(cur, NULL, 0);
 		if ((cur = strchr(cur, ',')) != NULL)
 			cur++;