diff --git a/drivers/scsi/aha152x.c b/drivers/scsi/aha152x.c
index a09b2d3..f5215fd 100644
--- a/drivers/scsi/aha152x.c
+++ b/drivers/scsi/aha152x.c
@@ -994,13 +994,13 @@
 	SCpnt->SCp.sent_command	= 0;
 
 	if(SCpnt->SCp.phase & (resetting|check_condition)) {
-		if(SCpnt->host_scribble==0 || SCSEM(SCpnt) || SCNEXT(SCpnt)) {
+		if (!SCpnt->host_scribble || SCSEM(SCpnt) || SCNEXT(SCpnt)) {
 			printk(ERR_LEAD "cannot reuse command\n", CMDINFO(SCpnt));
 			return FAILED;
 		}
 	} else {
 		SCpnt->host_scribble = kmalloc(sizeof(struct aha152x_scdata), GFP_ATOMIC);
-		if(SCpnt->host_scribble==0) {
+		if(!SCpnt->host_scribble) {
 			printk(ERR_LEAD "allocation failed\n", CMDINFO(SCpnt));
 			return FAILED;
 		}
@@ -1162,7 +1162,7 @@
 	}
 
 	DO_LOCK(flags);
-	issued       = remove_SC(&ISSUE_SC, SCpnt)==0;
+	issued       = remove_SC(&ISSUE_SC, SCpnt) == NULL;
 	disconnected = issued && remove_SC(&DISCONNECTED_SC, SCpnt);
 	DO_UNLOCK(flags);