diff --git a/src/arch/x86/isa/decoder/two_byte_opcodes.isa b/src/arch/x86/isa/decoder/two_byte_opcodes.isa
index ba150232e0..f88ea89d4d 100644
--- a/src/arch/x86/isa/decoder/two_byte_opcodes.isa
+++ b/src/arch/x86/isa/decoder/two_byte_opcodes.isa
@@ -951,7 +951,7 @@
                     }
                     // repe (0xF3)
                     0x4: decode OPCODE_OP_BOTTOM3 {
-                        0x6: WarnUnimpl::movq2dq_Vo_PRq();
+                        0x6: MOVQ2DQ(Vo,PRq);
                         default: UD2();
                     }
                     // operand size (0x66)
diff --git a/src/arch/x86/isa/insts/simd128/integer/data_transfer/move.py b/src/arch/x86/isa/insts/simd128/integer/data_transfer/move.py
index b4c96cd8e0..c34bd42bb2 100644
--- a/src/arch/x86/isa/insts/simd128/integer/data_transfer/move.py
+++ b/src/arch/x86/isa/insts/simd128/integer/data_transfer/move.py
@@ -82,8 +82,12 @@ def macroop MOVQ_P_XMM {
 def macroop MOVDQ2Q_MMX_XMM {
     movfp mmx, xmmlm, dataSize=8
 };
+
+def macroop MOVQ2DQ_XMM_MMX {
+    movfp xmml, mmxm, dataSize=8
+    lfpimm xmmh, 0
+};
 '''
 # MOVDQA
 # MOVDQU
-# MOVQ2DQ
 # LDDQU