diff --git a/libtirpc/src/auth_sspi.c b/libtirpc/src/auth_sspi.c
index 7664809..b4c6de6 100644
--- a/libtirpc/src/auth_sspi.c
+++ b/libtirpc/src/auth_sspi.c
@@ -760,7 +760,7 @@ uint32_t sspi_wrap(PCtxtHandle ctx, u_int seq, sspi_buffer_desc *bufin,
     SecBuff[2].BufferType = SECBUFFER_PADDING;
     SecBuff[2].pvBuffer = malloc(ContextSizes.cbBlockSize);
 
-    maj_stat = EncryptMessage(ctx, ulQop, &BuffDesc, 0);
+    maj_stat = EncryptMessage(ctx, ulQop, &BuffDesc, seq);
     if (maj_stat != SEC_E_OK)
         goto out_free;
 
@@ -781,7 +781,7 @@ out:
     return maj_stat;
 }
 
-uint32_t sspi_unwrap(PCtxtHandle ctx, sspi_buffer_desc *bufin, 
+uint32_t sspi_unwrap(PCtxtHandle ctx, u_int seq, sspi_buffer_desc *bufin, 
                      sspi_buffer_desc *bufout, u_int *conf_state, 
                      u_int *qop_state)
 {
@@ -804,7 +804,7 @@ uint32_t sspi_unwrap(PCtxtHandle ctx, sspi_buffer_desc *bufin,
 
     log_hexdump(0, "cipher:", bufin->value, bufin->length, 0);
 
-    maj_stat = DecryptMessage(ctx, &BuffDesc, 0, &ulQop);
+    maj_stat = DecryptMessage(ctx, &BuffDesc, seq, &ulQop);
     if (maj_stat != SEC_E_OK) return maj_stat;
 
     bufout->length = SecBuff[1].cbBuffer;
diff --git a/libtirpc/src/authsspi_prot.c b/libtirpc/src/authsspi_prot.c
index ff812bc..96629e9 100644
--- a/libtirpc/src/authsspi_prot.c
+++ b/libtirpc/src/authsspi_prot.c
@@ -248,7 +248,7 @@ xdr_rpc_sspi_unwrap_data(XDR *xdrs, xdrproc_t xdr_func, caddr_t xdr_ptr,
 		maj_stat = gss_unwrap(&min_stat, ctx, &wrapbuf, &databuf,
 				      &conf_state, &qop_state);
 #else
-        maj_stat = sspi_unwrap(ctx, &wrapbuf, &databuf, &conf_state, &qop_state);
+        maj_stat = sspi_unwrap(ctx, seq, &wrapbuf, &databuf, &conf_state, &qop_state);
 #endif
 #if 0
 		gss_release_buffer(&min_stat, &wrapbuf);
diff --git a/libtirpc/tirpc/rpc/auth_sspi.h b/libtirpc/tirpc/rpc/auth_sspi.h
index 53f06b6..dedf9ad 100644
--- a/libtirpc/tirpc/rpc/auth_sspi.h
+++ b/libtirpc/tirpc/rpc/auth_sspi.h
@@ -107,7 +107,7 @@ uint32_t sspi_verify_mic(void *ctx, u_int seq, sspi_buffer_desc *bufin,
                          sspi_buffer_desc *bufout, u_int *qop_state);
 uint32_t sspi_wrap(void *ctx, u_int seq, sspi_buffer_desc *bufin, 
                          sspi_buffer_desc *bufout, u_int *conf_state);
-uint32_t sspi_unwrap(void *ctx, sspi_buffer_desc *bufin, 
+uint32_t sspi_unwrap(void *ctx, u_int seq, sspi_buffer_desc *bufin, 
                      sspi_buffer_desc *bufout, u_int *conf_state, 
                      u_int *qop_state);
 void sspi_release_buffer(sspi_buffer_desc *buf);