diff --git a/lib/MC/MCParser/AsmParser.cpp b/lib/MC/MCParser/AsmParser.cpp
index dd438b76124..077d2dffa65 100644
--- a/lib/MC/MCParser/AsmParser.cpp
+++ b/lib/MC/MCParser/AsmParser.cpp
@@ -331,10 +331,9 @@ bool AsmParser::ParseExpression(const MCExpr *&Res, SMLoc &EndLoc) {
 }
 
 bool AsmParser::ParseParenExpression(const MCExpr *&Res, SMLoc &EndLoc) {
-  if (ParseParenExpr(Res, EndLoc))
-    return true;
-
-  return false;
+  Res = 0;
+  return ParseParenExpr(Res, EndLoc) ||
+         ParseBinOpRHS(1, Res, EndLoc);
 }
 
 bool AsmParser::ParseAbsoluteExpression(int64_t &Res) {
diff --git a/lib/Target/X86/AsmParser/X86AsmParser.cpp b/lib/Target/X86/AsmParser/X86AsmParser.cpp
index 7a9218e743c..19fbf85e4af 100644
--- a/lib/Target/X86/AsmParser/X86AsmParser.cpp
+++ b/lib/Target/X86/AsmParser/X86AsmParser.cpp
@@ -300,8 +300,8 @@ X86Operand *X86ATTAsmParser::ParseMemOperand() {
   
   // We have to disambiguate a parenthesized expression "(4+5)" from the start
   // of a memory operand with a missing displacement "(%ebx)" or "(,%eax)".  The
-  // only way to do this without lookahead is to eat the ( and see what is after
-  // it.
+  // only way to do this without lookahead is to eat the '(' and see what is
+  // after it.
   const MCExpr *Disp = MCConstantExpr::Create(0, getParser().getContext());
   if (getLexer().isNot(AsmToken::LParen)) {
     SMLoc ExprEnd;
diff --git a/test/MC/AsmParser/exprs.s b/test/MC/AsmParser/exprs.s
index 5fa4a371c3d..62b11c2d4e4 100644
--- a/test/MC/AsmParser/exprs.s
+++ b/test/MC/AsmParser/exprs.s
@@ -60,3 +60,4 @@ n:
         nop
         
         
+        movw	$8, (42)+66(%eax)