diff --git a/appveyor.yml b/appveyor.yml
index 0b74b024f..d457fc757 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -11,9 +11,9 @@ install:
   - cinst -y dart-sdk --version=2.8.4
 build_script:
   - mvn -DskipTests install --batch-mode
-  - msbuild /target:restore /target:rebuild /property:Configuration=Release /logger:"C:\Program Files\AppVeyor\BuildAgent\Appveyor.MSBuildLogger.dll" /verbosity:detailed runtime/CSharp/runtime/CSharp/Antlr4.dotnet.sln
+  - msbuild /target:restore /target:rebuild /property:Configuration=Release /logger:"C:\Program Files\AppVeyor\BuildAgent\Appveyor.MSBuildLogger.dll" /verbosity:detailed runtime/CSharp/runtime/CSharp/Antlr4.sln
 after_build:
-  - msbuild /target:pack /property:Configuration=Release /verbosity:detailed runtime/CSharp/runtime/CSharp/Antlr4.dotnet.sln
+  - msbuild /target:pack /property:Configuration=Release /verbosity:detailed runtime/CSharp/runtime/CSharp/Antlr4.sln
 test_script:
   - mvn install -Dantlr-php-php="C:\tools\php\php.exe" -Dantlr-dart-dart="C:\tools\dart-sdk\bin\dart.exe" -Dantlr-dart-pub="C:\tools\dart-sdk\bin\pub.bat" -Dantlr-dart-dart2native="C:\tools\dart-sdk\bin\dart2native.bat" -Dantlr-python2-python="C:\Python27\python.exe" -Dantlr-python3-python="C:\Python35\python.exe" --batch-mode
 artifacts:
diff --git a/runtime/CSharp/runtime/CSharp/Antlr4.Runtime/Antlr4.Runtime.dotnet.csproj b/runtime/CSharp/runtime/CSharp/Antlr4.Runtime/Antlr4.Runtime.csproj
similarity index 100%
rename from runtime/CSharp/runtime/CSharp/Antlr4.Runtime/Antlr4.Runtime.dotnet.csproj
rename to runtime/CSharp/runtime/CSharp/Antlr4.Runtime/Antlr4.Runtime.csproj
diff --git a/runtime/CSharp/runtime/CSharp/Antlr4.dotnet.sln b/runtime/CSharp/runtime/CSharp/Antlr4.dotnet.sln
deleted file mode 100644
index 27dc0c4a8..000000000
--- a/runtime/CSharp/runtime/CSharp/Antlr4.dotnet.sln
+++ /dev/null
@@ -1,34 +0,0 @@
-
-Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio 15
-VisualStudioVersion = 15.0.26114.2
-MinimumVisualStudioVersion = 10.0.40219.1
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Antlr4.Runtime.dotnet", "Antlr4.Runtime\Antlr4.Runtime.dotnet.csproj", "{0F9F8436-A767-4407-8E81-F9C6270E2B5A}"
-EndProject
-Global
-	GlobalSection(SolutionConfigurationPlatforms) = preSolution
-		Debug|Any CPU = Debug|Any CPU
-		Release|Any CPU = Release|Any CPU
-		Debug|x64 = Debug|x64
-		Debug|x86 = Debug|x86
-		Release|x64 = Release|x64
-		Release|x86 = Release|x86
-	EndGlobalSection
-	GlobalSection(ProjectConfigurationPlatforms) = postSolution
-		{0F9F8436-A767-4407-8E81-F9C6270E2B5A}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{0F9F8436-A767-4407-8E81-F9C6270E2B5A}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{0F9F8436-A767-4407-8E81-F9C6270E2B5A}.Debug|x64.ActiveCfg = Debug|x64
-		{0F9F8436-A767-4407-8E81-F9C6270E2B5A}.Debug|x64.Build.0 = Debug|x64
-		{0F9F8436-A767-4407-8E81-F9C6270E2B5A}.Debug|x86.ActiveCfg = Debug|x86
-		{0F9F8436-A767-4407-8E81-F9C6270E2B5A}.Debug|x86.Build.0 = Debug|x86
-		{0F9F8436-A767-4407-8E81-F9C6270E2B5A}.Release|Any CPU.ActiveCfg = Release|Any CPU
-		{0F9F8436-A767-4407-8E81-F9C6270E2B5A}.Release|Any CPU.Build.0 = Release|Any CPU
-		{0F9F8436-A767-4407-8E81-F9C6270E2B5A}.Release|x64.ActiveCfg = Release|x64
-		{0F9F8436-A767-4407-8E81-F9C6270E2B5A}.Release|x64.Build.0 = Release|x64
-		{0F9F8436-A767-4407-8E81-F9C6270E2B5A}.Release|x86.ActiveCfg = Release|x86
-		{0F9F8436-A767-4407-8E81-F9C6270E2B5A}.Release|x86.Build.0 = Release|x86
-	EndGlobalSection
-	GlobalSection(SolutionProperties) = preSolution
-		HideSolutionNode = FALSE
-	EndGlobalSection
-EndGlobal
diff --git a/runtime/CSharp/runtime/CSharp/Antlr4.sln b/runtime/CSharp/runtime/CSharp/Antlr4.sln
new file mode 100644
index 000000000..1f63a3fa4
--- /dev/null
+++ b/runtime/CSharp/runtime/CSharp/Antlr4.sln
@@ -0,0 +1,34 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 15
+VisualStudioVersion = 15.0.26114.2
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Antlr4.Runtime", "Antlr4.Runtime\Antlr4.Runtime.csproj", "{A90A2A23-E922-407F-BDB8-C88E6CA1AE4F}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+		Debug|x64 = Debug|x64
+		Debug|x86 = Debug|x86
+		Release|x64 = Release|x64
+		Release|x86 = Release|x86
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{A90A2A23-E922-407F-BDB8-C88E6CA1AE4F}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{A90A2A23-E922-407F-BDB8-C88E6CA1AE4F}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{A90A2A23-E922-407F-BDB8-C88E6CA1AE4F}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{A90A2A23-E922-407F-BDB8-C88E6CA1AE4F}.Release|Any CPU.Build.0 = Release|Any CPU
+		{A90A2A23-E922-407F-BDB8-C88E6CA1AE4F}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{A90A2A23-E922-407F-BDB8-C88E6CA1AE4F}.Debug|x64.Build.0 = Debug|Any CPU
+		{A90A2A23-E922-407F-BDB8-C88E6CA1AE4F}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{A90A2A23-E922-407F-BDB8-C88E6CA1AE4F}.Debug|x86.Build.0 = Debug|Any CPU
+		{A90A2A23-E922-407F-BDB8-C88E6CA1AE4F}.Release|x64.ActiveCfg = Release|Any CPU
+		{A90A2A23-E922-407F-BDB8-C88E6CA1AE4F}.Release|x64.Build.0 = Release|Any CPU
+		{A90A2A23-E922-407F-BDB8-C88E6CA1AE4F}.Release|x86.ActiveCfg = Release|Any CPU
+		{A90A2A23-E922-407F-BDB8-C88E6CA1AE4F}.Release|x86.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+EndGlobal