diff --git a/memcheck/mc_translate.c b/memcheck/mc_translate.c
index 46f870672..f28ca2bf7 100644
--- a/memcheck/mc_translate.c
+++ b/memcheck/mc_translate.c
@@ -1986,6 +1986,10 @@ IRAtom* expr2vbits_Binop ( MCEnv* mce,
       case Iop_DivU32:
          return mkLazy2(mce, Ity_I32, vatom1, vatom2);
 
+      case Iop_DivS64:
+      case Iop_DivU64:
+         return mkLazy2(mce, Ity_I64, vatom1, vatom2);
+
       case Iop_Add32:
          if (mce->bogusLiterals)
             return expensiveAddSub(mce,True,Ity_I32,