diff --git a/src/arm/full-codegen-arm.cc b/src/arm/full-codegen-arm.cc
index 1e7efd209a..733c5f484d 100644
--- a/src/arm/full-codegen-arm.cc
+++ b/src/arm/full-codegen-arm.cc
@@ -1409,6 +1409,7 @@ void FullCodeGenerator::VisitUnaryOperation(UnaryOperation* expr) {
       __ bic(result_register(), result_register(), Operand(kSmiTagMask));
       __ bind(&done);
       Apply(context_, result_register());
+      break;
     }
 
     default:
diff --git a/src/ia32/full-codegen-ia32.cc b/src/ia32/full-codegen-ia32.cc
index db5b6cb2cc..6b610609fb 100644
--- a/src/ia32/full-codegen-ia32.cc
+++ b/src/ia32/full-codegen-ia32.cc
@@ -1512,6 +1512,7 @@ void FullCodeGenerator::VisitUnaryOperation(UnaryOperation* expr) {
       __ and_(result_register(), ~kSmiTagMask);  // Remove inverted smi-tag.
       __ bind(&done);
       Apply(context_, result_register());
+      break;
     }
 
     default:
diff --git a/src/x64/full-codegen-x64.cc b/src/x64/full-codegen-x64.cc
index d93d69e3c1..06efa7472b 100644
--- a/src/x64/full-codegen-x64.cc
+++ b/src/x64/full-codegen-x64.cc
@@ -1518,6 +1518,7 @@ void FullCodeGenerator::VisitUnaryOperation(UnaryOperation* expr) {
       __ SmiNot(result_register(), result_register());
       __ bind(&done);
       Apply(context_, result_register());
+      break;
     }
 
     default: