diff --git a/arch/riscv/include/arch/riscv/feature.h b/arch/riscv/include/arch/riscv/feature.h
index 8cf08660..ff2d2c5c 100644
--- a/arch/riscv/include/arch/riscv/feature.h
+++ b/arch/riscv/include/arch/riscv/feature.h
@@ -9,6 +9,7 @@
 
 #include <lk/compiler.h>
 #include <stdbool.h>
+#include <stdint.h>
 #include <stdlib.h>
 
 __BEGIN_CDECLS