diff --git a/examples/dotnet/csfz.cs b/examples/dotnet/csfz.cs
deleted file mode 100644
index 0fd1da04d0..0000000000
--- a/examples/dotnet/csfz.cs
+++ /dev/null
@@ -1,95 +0,0 @@
-// Copyright 2010-2018 Google LLC
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-using System;
-using Google.OrTools.Flatzinc;
-
-public class CsFz
-{
-  /**
-   * Loads a flatzinc file (passed as the first argument) and solves it.
-   */
-  private static void Solve(String filename)
-  {
-    Model model = new Model(filename);
-    model.LoadFromFile(filename);
-    // Uncomment to see the model.
-    // Console.WriteLine(model.ToString());
-    // This is mandatory.
-    model.PresolveForCp(/*verbose=*/false);
-    // Display basic statistics on the model.
-    model.PrintStatistics();
-
-    FlatzincParameters parameters = new FlatzincParameters();
-    // Initialize to default values as in the C++ runner.
-    parameters.all_solutions = false;
-    parameters.free_search = false;
-    parameters.last_conflict = false;
-    parameters.heuristic_period = 100;
-    parameters.ignore_unknown = false;
-    parameters.log_period = 10000000;
-    parameters.luby_restart = -1;
-    parameters.num_solutions = 0;
-    parameters.restart_log_size = -1;
-    parameters.threads = 0;
-    parameters.time_limit_in_ms = 10000;
-    parameters.logging = false;
-    parameters.verbose_impact = false;
-    parameters.thread_id = -1;
-    parameters.search_type = FlatzincParameters.DEFAULT;
-    // Mandatory to retrieve solutions.
-    parameters.store_all_solutions = true;
-
-    Solver solver = new Solver(model);
-    solver.Solve(parameters);
-
-    int last = solver.NumStoredSolutions() - 1;
-    if (last >= 0) {
-      SolutionOutputSpecsVector output_vector = model.output();
-      foreach (SolutionOutputSpecs output in output_vector) {
-        if (output.variable != null) {
-          IntegerVariable var = output.variable;
-          Console.WriteLine(output.name +  " = " +
-                            solver.StoredValue(last, var));
-        }
-        if (output.flat_variables.Count > 0) {
-          String line = output.name;
-          foreach (SolutionOutputSpecs.Bounds b in output.bounds) {
-            line += "[" + b.ToString() + "]";
-          }
-          line += " = {";
-          bool start = true;
-          foreach (IntegerVariable var in output.flat_variables) {
-            if (start) {
-              start = false;
-            } else {
-              line += ", ";
-            }
-            line += solver.StoredValue(last, var);
-          }
-          line += "}";
-          Console.WriteLine(line);
-        }
-      }
-    }
-  }
-
-  public static void Main(String[] args)
-  {
-    if (args.Length == 0) {
-      Console.WriteLine("A file name is required!");
-    } else {
-      Solve(args[0]);
-    }
-  }
-}
diff --git a/examples/dotnet/csfz.csproj b/examples/dotnet/csfz.csproj
deleted file mode 100644
index 2942180999..0000000000
--- a/examples/dotnet/csfz.csproj
+++ /dev/null
@@ -1,22 +0,0 @@
-<Project Sdk="Microsoft.NET.Sdk">
-  <PropertyGroup>
-    <OutputType>Exe</OutputType>
-    <LangVersion>7.2</LangVersion>
-    <TargetFramework>netcoreapp2.1</TargetFramework>
-    <EnableDefaultItems>false</EnableDefaultItems>
-    <RestoreSources>../../packages;$(RestoreSources);https://api.nuget.org/v3/index.json</RestoreSources>
-    <AssemblyName>Google.OrTools.csfz</AssemblyName>
-    <IsPackable>true</IsPackable>
-  </PropertyGroup>
-
-  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
-    <DebugType>full</DebugType>
-    <Optimize>true</Optimize>
-    <GenerateTailCalls>true</GenerateTailCalls>
-  </PropertyGroup>
-
-  <ItemGroup>
-    <Compile Include="csfz.cs" />
-    <PackageReference Include="Google.OrTools" Version="7.2.*" />
-  </ItemGroup>
-</Project>
diff --git a/makefiles/Makefile.dotnet.mk b/makefiles/Makefile.dotnet.mk
index 3edcfff8e4..8bb8b00368 100644
--- a/makefiles/Makefile.dotnet.mk
+++ b/makefiles/Makefile.dotnet.mk
@@ -293,7 +293,7 @@ $(OBJ_DIR)/swig/sorted_interval_list_csharp_wrap.$O: \
  | $(OBJ_DIR)/swig
 	$(CCC) $(CFLAGS) \
  -c $(GEN_PATH)$Sortools$Sutil$Ssorted_interval_list_csharp_wrap.cc \
- $(OBJ_OUT)$(OBJ_DIR)$Sswig$Ssorted_interval_list_csharp_wrap.$O 
+ $(OBJ_OUT)$(OBJ_DIR)$Sswig$Ssorted_interval_list_csharp_wrap.$O
 
 ifneq ($(DOTNET_SNK),)
 $(DOTNET_ORTOOLS_SNK): | $(BIN_DIR)
@@ -650,7 +650,6 @@ test_dotnet_contrib:
 	$(MAKE) run SOURCE=examples/contrib/fsvolsay3-lpSolve.fs
 	$(MAKE) run SOURCE=examples/contrib/fsvolsay3.fs
 	$(MAKE) run SOURCE=examples/contrib/SimpleProgramFSharp.fs
-#	$(MAKE) run SOURCE=examples/contrib/csfz.cs # Flatzinc needed
 #	$(MAKE) run SOURCE=examples/contrib/nontransitive_dice.cs # too long
 #	$(MAKE) run SOURCE=examples/contrib/partition.cs # too long
 #	$(MAKE) run SOURCE=examples/contrib/secret_santa.cs # too long