diff --git a/tools/libacpi/acpi2_0.h b/tools/libacpi/acpi2_0.h
index 6dfa939a8c..51623e2a8a 100644
--- a/tools/libacpi/acpi2_0.h
+++ b/tools/libacpi/acpi2_0.h
@@ -140,7 +140,6 @@ struct acpi_20_tpm2 {
 
 #define TPM_LOG_AREA_ADDRESS        0xFED50000
 
-#define TPM_LOG_AREA_MINIMUM_SIZE   (64 << 10)
 #define TPM_LOG_SIZE                (64 << 10)
 
 /*
diff --git a/tools/libacpi/build.c b/tools/libacpi/build.c
index 2f29863db1..95188e217e 100644
--- a/tools/libacpi/build.c
+++ b/tools/libacpi/build.c
@@ -473,7 +473,7 @@ static int construct_secondary_tables(struct acpi_ctxt *ctxt,
             tpm2->platform_class = TPM2_ACPI_CLASS_CLIENT;
             tpm2->control_area_address = TPM_CRB_CTRL_REQ;
             tpm2->start_method = TPM2_START_METHOD_CRB;
-            tpm2->log_area_minimum_length = TPM_LOG_AREA_MINIMUM_SIZE;
+            tpm2->log_area_minimum_length = TPM_LOG_SIZE;
             tpm2->log_area_start_address = TPM_LOG_AREA_ADDRESS;
 
             set_checksum(tpm2,