diff --git a/src/Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore/project.json b/src/Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore/project.json
index e06efde769..a9d0fcae5c 100644
--- a/src/Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore/project.json
+++ b/src/Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore/project.json
@@ -29,8 +29,7 @@
   "frameworks": {
     "net451": {
       "frameworkAssemblies": {
-        "System.Configuration": "",
-        "System.Threading.Tasks": ""
+        "System.Configuration": ""
       }
     },
     "netstandard1.3": {