diff --git a/tools/run_tests/build_csharp_coreclr.bat b/tools/run_tests/build_csharp_coreclr.bat
index cead6d0e02c..b6e3ccbd2b8 100644
--- a/tools/run_tests/build_csharp_coreclr.bat
+++ b/tools/run_tests/build_csharp_coreclr.bat
@@ -33,7 +33,7 @@ cd /d %~dp0\..\..\src\csharp
 
 dotnet restore . || goto :error
 
-dotnet build -f netstandard1.5 --configuration %MSBUILD_CONFIG% "**/project.json" || goto :error
+dotnet build --configuration %MSBUILD_CONFIG% "**/project.json" || goto :error
 
 endlocal
 
diff --git a/tools/run_tests/run_tests.py b/tools/run_tests/run_tests.py
index 146018ba3a3..c579f14f91d 100755
--- a/tools/run_tests/run_tests.py
+++ b/tools/run_tests/run_tests.py
@@ -654,15 +654,9 @@ class CSharpLanguage(object):
     assembly_extension = '.exe'
 
     if self.args.compiler == 'coreclr':
-      if self.platform == 'linux':
-        assembly_subdir += '/netstandard1.5/debian.8-x64'
-        assembly_extension = ''
-      elif self.platform == 'mac':
-        assembly_subdir += '/netstandard1.5/osx.10.11-x64'
-        assembly_extension = ''
-      else:
-        assembly_subdir += '/netstandard1.5/win7-x64'
-      runtime_cmd = []
+      assembly_subdir += '/netcoreapp1.0'
+      runtime_cmd = ['dotnet', 'exec']
+      assembly_extension = '.dll'
     else:
       nunit_args += ['--noresult', '--workers=1']
       if self.platform == 'windows':