diff --git a/3rdparty/deepin-pdfium/src/3rdparty/pdfium/pdfium/build/build_config.h b/3rdparty/deepin-pdfium/src/3rdparty/pdfium/pdfium/build/build_config.h
index 86957893..d3873721 100644
--- a/3rdparty/deepin-pdfium/src/3rdparty/pdfium/pdfium/build/build_config.h
+++ b/3rdparty/deepin-pdfium/src/3rdparty/pdfium/pdfium/build/build_config.h
@@ -209,6 +209,11 @@
 #define ARCH_CPU_ALPHA21264 1
 #define ARCH_CPU_64_BITS 1
 #define ARCH_CPU_LITTLE_ENDIAN 1
+#elif defined(__riscv) && (__riscv_xlen == 64)
+#define ARCH_CPU_RISCV_FAMILY 1
+#define ARCH_CPU_RISCV64 1
+#define ARCH_CPU_64_BITS 1
+#define ARCH_CPU_LITTLE_ENDIAN 1
 #else
 #error Please add support for your architecture in build/build_config.h
 #endif