diff --git a/common/h/mnemonics/x86_entryIDs.h b/common/h/mnemonics/x86_entryIDs.h
index 5df64b2a89..e8ffce0586 100644
--- a/common/h/mnemonics/x86_entryIDs.h
+++ b/common/h/mnemonics/x86_entryIDs.h
@@ -185,7 +185,7 @@ e_fnop,
 e_fnstcw,
 e_fprem,
 e_frstor,
-e_fsave,
+e_fnsave,
 e_fst,
 e_fnstenv,
 e_fstp,
diff --git a/common/src/arch-x86.C b/common/src/arch-x86.C
index 16416655ef..7a6c501144 100644
--- a/common/src/arch-x86.C
+++ b/common/src/arch-x86.C
@@ -1030,7 +1030,7 @@ COMMON_EXPORT dyn_hash_map<entryID, std::string> entryNames_IAPI = map_list_of
   (e_fnop, "fnop")
  (e_fprem, "fprem")
   (e_frstor, "frstor")
-  (e_fsave, "fsave")
+  (e_fnsave, "fnsave")
   (e_fst, "fst")
   (e_fnstcw, "fnstcw")
   (e_fnstenv, "fnstenv")
@@ -3543,7 +3543,7 @@ static ia32_entry fpuMap[][2][8] = {
         { e_fstp,   t_done, 0, true, { Efd, ST0, Zz }, 0, s1W2R, 0 }, // stack pop
         { e_frstor, t_done, 0, true, { M512, Zz, Zz }, 0, s1R, 0 },
         { e_fucomp, t_done, 0, true, { ST0, Efd, Zz }, 0, s1R2R, 0 }, // stack pop
-        { e_fsave,  t_done, 0, true, { M512, Zz, Zz }, 0, s1W, 0 },
+        { e_fnsave,  t_done, 0, true, { M512, Zz, Zz }, 0, s1W, 0 },
         { e_fnstsw,  t_done, 0, true, { Ew, Zz, Zz }, 0, s1W, 0 }
     },
     { // DD TODO semantics check
diff --git a/dataflowAPI/src/convertOpcodes.C b/dataflowAPI/src/convertOpcodes.C
index 89e550d2c3..3455bdfa8b 100644
--- a/dataflowAPI/src/convertOpcodes.C
+++ b/dataflowAPI/src/convertOpcodes.C
@@ -402,7 +402,7 @@ X86InstructionKind RoseInsnX86Factory::convertKind(entryID opcode, prefixEntryID
             return x86_fnop;
         case e_frstor:
             return x86_frstor;
-        case e_fsave:
+        case e_fnsave:
             return x86_fnsave;
         case e_fst:
             return x86_fst;