diff --git a/Examples/test-suite/csharp/enum_thorough_runme.cs b/Examples/test-suite/csharp/enum_thorough_runme.cs
index 6822af5e2..0101785d2 100755
--- a/Examples/test-suite/csharp/enum_thorough_runme.cs
+++ b/Examples/test-suite/csharp/enum_thorough_runme.cs
@@ -7,8 +7,8 @@ public class runme {
       // Anonymous enums
       int i = enum_thorough.AnonEnum1;
       if (enum_thorough.ReallyAnInteger != 200) throw new Exception("Test Anon 1 failed");
-      int j = enum_thorough.AnonSpaceEnum1;
-      int k = AnonStruct.AnonStructEnum1;
+      i += enum_thorough.AnonSpaceEnum1;
+      i += AnonStruct.AnonStructEnum1;
     }
     {
       colour red = colour.red;
diff --git a/Examples/test-suite/csharp/enum_thorough_simple_runme.cs b/Examples/test-suite/csharp/enum_thorough_simple_runme.cs
index ebdaa10ba..5b6e13b32 100644
--- a/Examples/test-suite/csharp/enum_thorough_simple_runme.cs
+++ b/Examples/test-suite/csharp/enum_thorough_simple_runme.cs
@@ -7,8 +7,8 @@ public class runme {
       // Anonymous enums
       int i = enum_thorough_simple.AnonEnum1;
       if (enum_thorough_simple.ReallyAnInteger != 200) throw new Exception("Test Anon 1 failed");
-      int j = enum_thorough_simple.AnonSpaceEnum1;
-      int k = AnonStruct.AnonStructEnum1;
+      i += enum_thorough_simple.AnonSpaceEnum1;
+      i += AnonStruct.AnonStructEnum1;
     }
     {
       int red = enum_thorough_simple.red;
diff --git a/Examples/test-suite/csharp/enum_thorough_typesafe_runme.cs b/Examples/test-suite/csharp/enum_thorough_typesafe_runme.cs
index aba4b6631..9bfa7c2c6 100644
--- a/Examples/test-suite/csharp/enum_thorough_typesafe_runme.cs
+++ b/Examples/test-suite/csharp/enum_thorough_typesafe_runme.cs
@@ -7,8 +7,8 @@ public class runme {
       // Anonymous enums
       int i = enum_thorough_typesafe.AnonEnum1;
       if (enum_thorough_typesafe.ReallyAnInteger != 200) throw new Exception("Test Anon 1 failed");
-      int j = enum_thorough_typesafe.AnonSpaceEnum1;
-      int k = AnonStruct.AnonStructEnum1;
+      i += enum_thorough_typesafe.AnonSpaceEnum1;
+      i += AnonStruct.AnonStructEnum1;
     }
     {
       colour red = colour.red;
diff --git a/Examples/test-suite/csharp/overload_template_runme.cs b/Examples/test-suite/csharp/overload_template_runme.cs
index 982167356..e4910161b 100644
--- a/Examples/test-suite/csharp/overload_template_runme.cs
+++ b/Examples/test-suite/csharp/overload_template_runme.cs
@@ -7,8 +7,9 @@ public class runme
     {
       int f = overload_template.foo();
 
-      int a = overload_template.max(3,4);
+      f += overload_template.max(3,4);
       double b = overload_template.max(3.4,5.2);
+      b++; // warning suppression
 
       // mix 1
       if (overload_template.mix1("hi") != 101)
diff --git a/Examples/test-suite/csharp/virtual_poly_runme.cs b/Examples/test-suite/csharp/virtual_poly_runme.cs
index 3e9a2d186..9c1f79613 100644
--- a/Examples/test-suite/csharp/virtual_poly_runme.cs
+++ b/Examples/test-suite/csharp/virtual_poly_runme.cs
@@ -22,6 +22,7 @@ public class runme {
 
         NDouble ddc = NDouble.narrow(dc);
         NInt dic = NInt.narrow(ic);
+        dc = ddc; ic = dic; // warning suppression
 
         virtual_poly.incr(ic);
         if ( (i.get() + 1) != ic.get() )