diff --git a/include/scsi-lowlevel.h b/include/scsi-lowlevel.h
index bdf590b..d25f905 100644
--- a/include/scsi-lowlevel.h
+++ b/include/scsi-lowlevel.h
@@ -176,14 +176,6 @@ struct scsi_readtoc_list {
 	struct scsi_readtoc_desc desc[0];
 };
 
-struct scsi_startstopunit_params {
-	int immed;
-	int pcm;
-	int pc;
-	int no_flush;
-	int loej;
-	int start;
-};
 struct scsi_preventallow_params {
 	int prevent;
 };
@@ -288,7 +280,6 @@ struct scsi_task {
 	int expxferlen;
 	unsigned char cdb[SCSI_CDB_MAX_SIZE];
 	union {
-		struct scsi_startstopunit_params   startstopunit;
 		struct scsi_preventallow_params    preventallow;
 		struct scsi_orwrite_params         orwrite;
 		struct scsi_compareandwrite_params compareandwrite;
diff --git a/lib/scsi-lowlevel.c b/lib/scsi-lowlevel.c
index dbb1d24..2f70aa9 100644
--- a/lib/scsi-lowlevel.c
+++ b/lib/scsi-lowlevel.c
@@ -1869,13 +1869,6 @@ scsi_cdb_startstopunit(int immed, int pcm, int pc, int no_flush, int loej, int s
 	task->xfer_dir   = SCSI_XFER_NONE;
 	task->expxferlen = 0;
 
-	task->params.startstopunit.immed    = immed;
-	task->params.startstopunit.pcm      = pcm;
-	task->params.startstopunit.pc       = pc;
-	task->params.startstopunit.no_flush = no_flush;
-	task->params.startstopunit.loej     = loej;
-	task->params.startstopunit.start    = start;
-
 	return task;
 }