diff --git a/platform/generic/allwinner/sun20i-d1.c b/platform/generic/allwinner/sun20i-d1.c
index a9a7e477..b9602843 100644
--- a/platform/generic/allwinner/sun20i-d1.c
+++ b/platform/generic/allwinner/sun20i-d1.c
@@ -5,7 +5,7 @@
  */
 
 #include <platform_override.h>
-#include <thead_c9xx.h>
+#include <thead/c9xx_encoding.h>
 #include <sbi/riscv_asm.h>
 #include <sbi/riscv_io.h>
 #include <sbi/sbi_bitops.h>
diff --git a/platform/generic/include/thead_c9xx.h b/platform/generic/include/thead/c9xx_encoding.h
similarity index 98%
rename from platform/generic/include/thead_c9xx.h
rename to platform/generic/include/thead/c9xx_encoding.h
index bab04082..58adbef0 100644
--- a/platform/generic/include/thead_c9xx.h
+++ b/platform/generic/include/thead/c9xx_encoding.h
@@ -1,5 +1,5 @@
-#ifndef __RISCV_THEAD_C9XX_H____
-#define __RISCV_THEAD_C9XX_H____
+#ifndef __RISCV_THEAD_C9XX_ENCODING_H____
+#define __RISCV_THEAD_C9XX_ENCODING_H____
 
 /* T-HEAD C9xx M mode CSR.  */
 #define THEAD_C9XX_CSR_MXSTATUS		0x7c0