diff --git a/src/Microsoft.AspNet.Razor/Editor/BackgroundParser.cs b/src/Microsoft.AspNet.Razor/Editor/BackgroundParser.cs
index 886c996531..2ae9fa76ca 100644
--- a/src/Microsoft.AspNet.Razor/Editor/BackgroundParser.cs
+++ b/src/Microsoft.AspNet.Razor/Editor/BackgroundParser.cs
@@ -309,7 +309,7 @@ namespace Microsoft.AspNet.Razor.Editor
                     RazorEditorTrace.TraceLine(RazorResources.FormatTrace_BackgroundThreadStart(fileNameOnly));
                     EnsureOnThread();
 
-#if K10
+#if ASPNETCORE50
                     var spinWait = new SpinWait();
 #endif
 
diff --git a/src/Microsoft.AspNet.Razor/project.json b/src/Microsoft.AspNet.Razor/project.json
index 981525f611..e061250651 100644
--- a/src/Microsoft.AspNet.Razor/project.json
+++ b/src/Microsoft.AspNet.Razor/project.json
@@ -19,6 +19,6 @@
     },
     "frameworks": {
         "net45": { },
-        "k10": { }
+        "aspnetcore50": { }
     }
 }
diff --git a/test/Microsoft.AspNet.Razor.Test/Project.json b/test/Microsoft.AspNet.Razor.Test/Project.json
index 28093d0b3b..79c9d4261a 100644
--- a/test/Microsoft.AspNet.Razor.Test/Project.json
+++ b/test/Microsoft.AspNet.Razor.Test/Project.json
@@ -1,4 +1,4 @@
-{
+{
     "resources": "TestFiles/**/*",
     "dependencies": {
         "Moq": "4.2.1312.1622",