diff --git a/cmd/sf.c b/cmd/sf.c
index 30b2bd5..730996c 100644
--- a/cmd/sf.c
+++ b/cmd/sf.c
@@ -604,7 +604,7 @@
 		ret = do_spi_flash_read_write(argc, argv);
 	else if (strcmp(cmd, "erase") == 0)
 		ret = do_spi_flash_erase(argc, argv);
-	else if (strcmp(cmd, "protect") == 0)
+	else if (IS_ENABLED(CONFIG_SPI_FLASH_LOCK) && strcmp(cmd, "protect") == 0)
 		ret = do_spi_protect(argc, argv);
 	else if (IS_ENABLED(CONFIG_CMD_SF_TEST) && !strcmp(cmd, "test"))
 		ret = do_spi_flash_test(argc, argv);
@@ -629,8 +629,10 @@
 	"sf update addr offset|partition len	- erase and write `len' bytes from memory\n"
 	"					  at `addr' to flash at `offset'\n"
 	"					  or to start of mtd `partition'\n"
+#ifdef CONFIG_SPI_FLASH_LOCK
 	"sf protect lock/unlock sector len	- protect/unprotect 'len' bytes starting\n"
 	"					  at address 'sector'"
+#endif
 #ifdef CONFIG_CMD_SF_TEST
 	"\nsf test offset len		- run a very basic destructive test"
 #endif