diff --git a/src/epi-sony-bravia.4Series.csproj b/src/epi-sony-bravia.4Series.csproj
index 445fe6b..3843350 100644
--- a/src/epi-sony-bravia.4Series.csproj
+++ b/src/epi-sony-bravia.4Series.csproj
@@ -24,6 +24,10 @@
     <DefineConstants>$(DefineConstants);SERIES4</DefineConstants>
   </PropertyGroup>
 
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|AnyCPU'">
+    <DefineConstants>$(DefineConstants);SERIES4</DefineConstants>
+  </PropertyGroup>
+
   <ItemGroup>
     <Compile Remove="Properties\**" />
     <EmbeddedResource Remove="Properties\**" />