diff --git a/src/include/antirollback.h b/src/include/antirollback.h
index f088ee2c53..889ba9a01f 100644
--- a/src/include/antirollback.h
+++ b/src/include/antirollback.h
@@ -17,8 +17,8 @@ enum vb2_pcr_digest;
 /* TPM NVRAM location indices. */
 #define FIRMWARE_NV_INDEX               0x1007
 #define KERNEL_NV_INDEX                 0x1008
-/* This is just an opaque space for backup purposes */
-#define BACKUP_NV_INDEX                 0x1009
+/* 0x1009 used to be used as a backup space. Think of conflicts if you
+ * want to use 0x1009 for something else. */
 
 /* Structure definitions for TPM spaces */
 
diff --git a/src/vboot/secdata_tpm.c b/src/vboot/secdata_tpm.c
index 76b90abee6..b1f3197610 100644
--- a/src/vboot/secdata_tpm.c
+++ b/src/vboot/secdata_tpm.c
@@ -245,11 +245,6 @@ static uint32_t _factory_initialize_tpm(struct vb2_context *ctx)
 	VBDEBUG("TPM: Clearing owner\n");
 	RETURN_ON_FAILURE(tpm_clear_and_reenable());
 
-	/* Define the backup space. No need to initialize it, though. */
-	RETURN_ON_FAILURE(safe_define_space(BACKUP_NV_INDEX,
-					    TPM_NV_PER_PPWRITE,
-					    VB2_NVDATA_SIZE));
-
 	/* Define and initialize the kernel space */
 	RETURN_ON_FAILURE(safe_define_space(KERNEL_NV_INDEX,
 					    TPM_NV_PER_PPWRITE,