diff --git a/sys/cam/ata/ata_all.c b/sys/cam/ata/ata_all.c
index e6da3bff6d11..0e20e4b11544 100644
--- a/sys/cam/ata/ata_all.c
+++ b/sys/cam/ata/ata_all.c
@@ -318,7 +318,12 @@ ata_cmd_string(struct ata_cmd *cmd, char *cmd_string, size_t len)
 	ata_cmd_sbuf(cmd, &sb);
 
 	error = sbuf_finish(&sb);
-	if (error != 0 && error != ENOMEM)
+	if (error != 0 &&
+#ifdef _KERNEL
+	    error != ENOMEM)
+#else
+	    errno != ENOMEM)
+#endif
 		return ("");
 
 	return(sbuf_data(&sb));
@@ -348,7 +353,12 @@ ata_res_string(struct ata_res *res, char *res_string, size_t len)
 	ata_res_sbuf(res, &sb);
 
 	error = sbuf_finish(&sb);
-	if (error != 0 && error != ENOMEM)
+	if (error != 0 &&
+#ifdef _KERNEL
+	    error != ENOMEM)
+#else
+	    errno != ENOMEM)
+#endif
 		return ("");
 
 	return(sbuf_data(&sb));
diff --git a/sys/cam/nvme/nvme_all.c b/sys/cam/nvme/nvme_all.c
index c7cf4ea29dd7..14fcd3a7536e 100644
--- a/sys/cam/nvme/nvme_all.c
+++ b/sys/cam/nvme/nvme_all.c
@@ -152,7 +152,12 @@ nvme_cmd_string(const struct nvme_command *cmd, char *cmd_string, size_t len)
 	nvme_cmd_sbuf(cmd, &sb);
 
 	error = sbuf_finish(&sb);
-	if (error != 0 && error != ENOMEM)
+	if (error != 0 &&
+#ifdef _KERNEL
+	    error != ENOMEM)
+#else
+	    errno != ENOMEM)
+#endif
 		return ("");
 
 	return(sbuf_data(&sb));
diff --git a/sys/cam/scsi/scsi_all.c b/sys/cam/scsi/scsi_all.c
index 5f076acbe9b2..1d9b74e4fe0c 100644
--- a/sys/cam/scsi/scsi_all.c
+++ b/sys/cam/scsi/scsi_all.c
@@ -3486,7 +3486,12 @@ scsi_cdb_string(u_int8_t *cdb_ptr, char *cdb_string, size_t len)
 
 	/* ENOMEM just means that the fixed buffer is full, OK to ignore */
 	error = sbuf_finish(&sb);
-	if (error != 0 && error != ENOMEM)
+	if (error != 0 &&
+#ifdef _KERNEL
+	    error != ENOMEM)
+#else
+	    errno != ENOMEM)
+#endif
 		return ("");
 
 	return(sbuf_data(&sb));