diff --git a/src/arm/lithium-codegen-arm.cc b/src/arm/lithium-codegen-arm.cc
index 929d04de13..5f5ce07476 100644
--- a/src/arm/lithium-codegen-arm.cc
+++ b/src/arm/lithium-codegen-arm.cc
@@ -1744,7 +1744,9 @@ void LCodeGen::DoShiftI(LShiftI* instr) {
         if (shift_count != 0) {
           if (instr->hydrogen_value()->representation().IsSmi() &&
               instr->can_deopt()) {
-            __ mov(result, Operand(left, LSL, shift_count - 1));
+            if (shift_count != 1) {
+              __ mov(result, Operand(left, LSL, shift_count - 1));
+            }
             __ SmiTag(result, result, SetCC);
             DeoptimizeIf(vs, instr->environment());
           } else {
diff --git a/src/ia32/lithium-codegen-ia32.cc b/src/ia32/lithium-codegen-ia32.cc
index 3ddad068bf..a21a96575b 100644
--- a/src/ia32/lithium-codegen-ia32.cc
+++ b/src/ia32/lithium-codegen-ia32.cc
@@ -1771,7 +1771,9 @@ void LCodeGen::DoShiftI(LShiftI* instr) {
         if (shift_count != 0) {
           if (instr->hydrogen_value()->representation().IsSmi() &&
               instr->can_deopt()) {
-            __ shl(ToRegister(left), shift_count - 1);
+            if (shift_count != 1) {
+              __ shl(ToRegister(left), shift_count - 1);
+            }
             __ SmiTag(ToRegister(left));
             DeoptimizeIf(overflow, instr->environment());
           } else {
diff --git a/src/mips/lithium-codegen-mips.cc b/src/mips/lithium-codegen-mips.cc
index 8db5f00fbf..4fa0ac4455 100644
--- a/src/mips/lithium-codegen-mips.cc
+++ b/src/mips/lithium-codegen-mips.cc
@@ -1583,7 +1583,9 @@ void LCodeGen::DoShiftI(LShiftI* instr) {
         if (shift_count != 0) {
           if (instr->hydrogen_value()->representation().IsSmi() &&
               instr->can_deopt()) {
-            __ sll(result, left, shift_count - 1);
+            if (shift_count != 1) {
+              __ sll(result, left, shift_count - 1);
+            }
             __ SmiTagCheckOverflow(result, result, scratch);
             DeoptimizeIf(lt, instr->environment(), scratch, Operand(zero_reg));
           } else {