diff --git a/src/backend_x64/emit_x64_vector.cpp b/src/backend_x64/emit_x64_vector.cpp
index 876ab899..240b0d24 100644
--- a/src/backend_x64/emit_x64_vector.cpp
+++ b/src/backend_x64/emit_x64_vector.cpp
@@ -1872,6 +1872,7 @@ static void EmitVectorRoundingHalvingAddUnsigned(size_t esize, EmitContext& ctx,
         code.paddd(a, b);
 
         ctx.reg_alloc.DefineValue(inst, a);
+        break;
     }
     }
 }