diff --git a/decode-test.c b/decode-test.c
index 09593ae..e3f4033 100644
--- a/decode-test.c
+++ b/decode-test.c
@@ -454,6 +454,10 @@ main(int argc, char** argv)
     TEST64("\x0f\xc7\x30", "vmptrld qword ptr [rax]");
     TEST64("\x66\x0f\xc7\x30", "vmclear qword ptr [rax]");
     TEST64("\xf3\x0f\xc7\x30", "vmxon qword ptr [rax]");
+    TEST32("\x0f\x78\xc1", "vmread ecx, eax");
+    TEST64("\x0f\x78\xc1", "vmread rcx, rax");
+    TEST32("\x0f\x79\xc1", "vmwrite eax, ecx");
+    TEST64("\x0f\x79\xc1", "vmwrite rax, rcx");
 
     TEST64("\x0f\x09", "wbinvd");
     TEST64("\xf3\x0f\x09", "wbnoinvd");
diff --git a/instrs.txt b/instrs.txt
index 3e3825a..353b53d 100644
--- a/instrs.txt
+++ b/instrs.txt
@@ -1487,7 +1487,7 @@ NP.0f01c3              NP   -   -   -   -   VMRESUME            F=VMX
 NP.0fc7/6m             M    Mq  -   -   -   VMPTRLD             F=VMX
 NP.0fc7/7m             M    Mq  -   -   -   VMPTRST             F=VMX
 NP.0f78                MR   Ey  Gy  -   -   VMREAD          D64 F=VMX
-NP.0f79                MR   Ey  Gy  -   -   VMWRITE         D64 F=VMX
+NP.0f79                RM   Gy  Ey  -   -   VMWRITE         D64 F=VMX
 NP.0f01c4              NP   -   -   -   -   VMXOFF              F=VMX
 F3.0fc7/6m             M    Mq  -   -   -   VMXON               F=VMX
 # SEAM/TDX