diff --git a/include/winnt.h b/include/winnt.h
index 64408126cba..66746d7f6ae 100644
--- a/include/winnt.h
+++ b/include/winnt.h
@@ -2651,6 +2651,9 @@ typedef struct _IMAGE_VXD_HEADER {
 #define IMAGE_FILE_MACHINE_ARM64EC      0xa641
 #define IMAGE_FILE_MACHINE_ARM64X       0xa64e
 #define IMAGE_FILE_MACHINE_ARM64        0xaa64
+#define IMAGE_FILE_MACHINE_RISCV32      0x5032
+#define IMAGE_FILE_MACHINE_RISCV64      0x5064
+#define IMAGE_FILE_MACHINE_RISCV128     0x5128
 #define IMAGE_FILE_MACHINE_CEE          0xc0ee
 
 #define	IMAGE_SIZEOF_FILE_HEADER		20
diff --git a/tools/winedump/pe.c b/tools/winedump/pe.c
index bf3aa6b4d69..5c2898b6dbc 100644
--- a/tools/winedump/pe.c
+++ b/tools/winedump/pe.c
@@ -59,6 +59,9 @@ const char *get_machine_str(int mach)
     case IMAGE_FILE_MACHINE_CHPE_X86:	return "CHPE-x86";
     case IMAGE_FILE_MACHINE_ARM64EC:	return "ARM64EC";
     case IMAGE_FILE_MACHINE_ARM64X:	return "ARM64X";
+    case IMAGE_FILE_MACHINE_RISCV32:	return "RISC-V 32-bit";
+    case IMAGE_FILE_MACHINE_RISCV64:	return "RISC-V 64-bit";
+    case IMAGE_FILE_MACHINE_RISCV128:	return "RISC-V 128-bit";
     }
     return "???";
 }