diff --git a/samples/IISSample/project.json b/samples/IISSample/project.json
index 56c97356c7..1141de3a07 100644
--- a/samples/IISSample/project.json
+++ b/samples/IISSample/project.json
@@ -14,9 +14,7 @@
   },
   "frameworks": {
     "net451": { },
-    "netstandardapp1.5": {
-      "imports": "portable-net451+win8"
-    }
+    "netstandardapp1.5": { }
   },
   "publishExclude": [
     "node_modules",
diff --git a/src/Microsoft.AspNetCore.Server.IISIntegration.Tools/project.json b/src/Microsoft.AspNetCore.Server.IISIntegration.Tools/project.json
index 318f0365f4..2e9667d2f5 100644
--- a/src/Microsoft.AspNetCore.Server.IISIntegration.Tools/project.json
+++ b/src/Microsoft.AspNetCore.Server.IISIntegration.Tools/project.json
@@ -17,11 +17,7 @@
   },
 
   "frameworks": {
-    "netstandardapp1.5": {
-      "imports": [
-        "portable-net451+win8",
-        "dnxcore50"
-      ]
+    "dnxcore50": {
     }
   }
 }
diff --git a/test/Microsoft.AspNetCore.Server.IISIntegration.Tests/project.json b/test/Microsoft.AspNetCore.Server.IISIntegration.Tests/project.json
index 6684014037..6c69336f4a 100644
--- a/test/Microsoft.AspNetCore.Server.IISIntegration.Tests/project.json
+++ b/test/Microsoft.AspNetCore.Server.IISIntegration.Tests/project.json
@@ -8,10 +8,7 @@
   },
   "frameworks": {
     "netstandardapp1.5": {
-      "imports": [
-        "portable-net451+win8",
-        "dnxcore50"
-      ],
+      "imports": "portable-net451+win8",
       "dependencies": {
         "dotnet-test-xunit": "1.0.0-dev-*"
       }
diff --git a/test/Microsoft.AspNetCore.Server.IISIntegration.Tools.Tests/project.json b/test/Microsoft.AspNetCore.Server.IISIntegration.Tools.Tests/project.json
index dee9e49e2a..6fb6f6f983 100644
--- a/test/Microsoft.AspNetCore.Server.IISIntegration.Tools.Tests/project.json
+++ b/test/Microsoft.AspNetCore.Server.IISIntegration.Tools.Tests/project.json
@@ -6,10 +6,7 @@
   },
   "frameworks": {
     "netstandardapp1.5": {
-      "imports": [
-        "portable-net451+win8",
-        "dnxcore50"
-      ],
+      "imports": "portable-net451+win8",
       "dependencies": {
         "dotnet-test-xunit": "1.0.0-dev-*"
       }
diff --git a/test/TestSites/project.json b/test/TestSites/project.json
index 12826ac40b..0439a35a03 100644
--- a/test/TestSites/project.json
+++ b/test/TestSites/project.json
@@ -18,15 +18,12 @@
   },
   "frameworks": {
     "netstandardapp1.5": {
-      "imports": [
-        "portable-net451+win8",
-        "dnxcore50"
-      ],
+      "imports": "portable-net451+win8",
       "dependencies": {
         "System.Net.Primitives": "4.0.11-*",
         "dotnet-test-xunit": "1.0.0-dev-*"
       }
     },
-    "net451": {}
+    "dnx451": {}
   }
 }