diff --git a/sys/geom/bde/g_bde.h b/sys/geom/bde/g_bde.h
index 76741a3e1ec5..3f36bb4281ae 100644
--- a/sys/geom/bde/g_bde.h
+++ b/sys/geom/bde/g_bde.h
@@ -176,7 +176,7 @@ void g_bde_worker(void *arg);
 static __inline void
 AES_init(cipherInstance *ci)
 {
-	int error __diagused;
+	int error;
 
 	error = rijndael_cipherInit(ci, MODE_CBC, NULL);
 	KASSERT(error > 0, ("rijndael_cipherInit %d", error));
@@ -185,7 +185,7 @@ AES_init(cipherInstance *ci)
 static __inline void
 AES_makekey(keyInstance *ki, int dir, u_int len, const void *key)
 {
-	int error __diagused;
+	int error;
 
 	error = rijndael_makeKey(ki, dir, len, key);
 	KASSERT(error > 0, ("rijndael_makeKey %d", error));
@@ -194,7 +194,7 @@ AES_makekey(keyInstance *ki, int dir, u_int len, const void *key)
 static __inline void
 AES_encrypt(cipherInstance *ci, keyInstance *ki, const void *in, void *out, u_int len)
 {
-	int error __diagused;
+	int error;
 
 	error = rijndael_blockEncrypt(ci, ki, in, len * 8, out);
 	KASSERT(error > 0, ("rijndael_blockEncrypt %d", error));
@@ -203,7 +203,7 @@ AES_encrypt(cipherInstance *ci, keyInstance *ki, const void *in, void *out, u_in
 static __inline void
 AES_decrypt(cipherInstance *ci, keyInstance *ki, const void *in, void *out, u_int len)
 {
-	int error __diagused;
+	int error;
 
 	error = rijndael_blockDecrypt(ci, ki, in, len * 8, out);
 	KASSERT(error > 0, ("rijndael_blockDecrypt %d", error));