diff --git a/test/perf/linux/getdents_benchmark.cc b/test/perf/linux/getdents_benchmark.cc
index 9030eb356..7c515c4c3 100644
--- a/test/perf/linux/getdents_benchmark.cc
+++ b/test/perf/linux/getdents_benchmark.cc
@@ -28,6 +28,8 @@
 #define SYS_getdents64 217
 #elif defined(__aarch64__)
 #define SYS_getdents64 217
+#elif defined(__riscv)
+#define SYS_getdents64 61
 #else
 #error "Unknown architecture"
 #endif