diff --git a/Octokit/Octokit-Mono.csproj b/Octokit/Octokit-Mono.csproj
index 96b590bf..5db7e288 100644
--- a/Octokit/Octokit-Mono.csproj
+++ b/Octokit/Octokit-Mono.csproj
@@ -18,7 +18,6 @@
     <IntermediateOutputPath>obj\Debug\Mono</IntermediateOutputPath>
     <OutputPath>bin\Debug\Mono</OutputPath>
     <DefineConstants>TRACE;DEBUG;CODE_ANALYSIS;SIMPLE_JSON_OBJARRAYINTERNAL;SIMPLE_JSON_INTERNAL;NET_45</DefineConstants>
-    <DefineConstants>DEBUG;</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>false</ConsolePause>