diff --git a/ICSharpCode.NRefactory.CSharp/Refactoring/CodeIssues/AccessToClosureIssues/AccessToClosureIssue.cs b/ICSharpCode.NRefactory.CSharp/Refactoring/CodeIssues/AccessToClosureIssues/AccessToClosureIssue.cs
index 15d9e1a002..c54af78854 100644
--- a/ICSharpCode.NRefactory.CSharp/Refactoring/CodeIssues/AccessToClosureIssues/AccessToClosureIssue.cs
+++ b/ICSharpCode.NRefactory.CSharp/Refactoring/CodeIssues/AccessToClosureIssues/AccessToClosureIssue.cs
@@ -24,7 +24,6 @@
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 // THE SOFTWARE.
 
-using System;
 using System.Collections.Generic;
 using System.Linq;
 using ICSharpCode.NRefactory.CSharp.Analysis;
diff --git a/ICSharpCode.NRefactory.CSharp/Refactoring/CodeIssues/AccessToClosureIssues/AccessToDisposedClosureIssue.cs b/ICSharpCode.NRefactory.CSharp/Refactoring/CodeIssues/AccessToClosureIssues/AccessToDisposedClosureIssue.cs
index 06f027faf0..738dc7b51a 100644
--- a/ICSharpCode.NRefactory.CSharp/Refactoring/CodeIssues/AccessToClosureIssues/AccessToDisposedClosureIssue.cs
+++ b/ICSharpCode.NRefactory.CSharp/Refactoring/CodeIssues/AccessToClosureIssues/AccessToDisposedClosureIssue.cs
@@ -24,7 +24,6 @@
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 // THE SOFTWARE.
 
-using System;
 using System.Collections.Generic;
 using System.Linq;
 using ICSharpCode.NRefactory.CSharp.Analysis;
diff --git a/ICSharpCode.NRefactory.CSharp/Refactoring/CodeIssues/ExpressionIsAlwaysOfProvidedTypeIssue.cs b/ICSharpCode.NRefactory.CSharp/Refactoring/CodeIssues/ExpressionIsAlwaysOfProvidedTypeIssue.cs
index 69b72d82ec..80b005473c 100644
--- a/ICSharpCode.NRefactory.CSharp/Refactoring/CodeIssues/ExpressionIsAlwaysOfProvidedTypeIssue.cs
+++ b/ICSharpCode.NRefactory.CSharp/Refactoring/CodeIssues/ExpressionIsAlwaysOfProvidedTypeIssue.cs
@@ -25,8 +25,6 @@
 // THE SOFTWARE.
 
 using System.Collections.Generic;
-using System.Linq;
-using ICSharpCode.NRefactory.TypeSystem;
 
 namespace ICSharpCode.NRefactory.CSharp.Refactoring
 {
diff --git a/ICSharpCode.NRefactory.CSharp/Refactoring/CodeIssues/ExpressionIsNeverOfProvidedTypeIssue.cs b/ICSharpCode.NRefactory.CSharp/Refactoring/CodeIssues/ExpressionIsNeverOfProvidedTypeIssue.cs
index 526b4ba7ee..7c28f3d1f9 100644
--- a/ICSharpCode.NRefactory.CSharp/Refactoring/CodeIssues/ExpressionIsNeverOfProvidedTypeIssue.cs
+++ b/ICSharpCode.NRefactory.CSharp/Refactoring/CodeIssues/ExpressionIsNeverOfProvidedTypeIssue.cs
@@ -25,8 +25,6 @@
 // THE SOFTWARE.
 
 using System.Collections.Generic;
-using System.Linq;
-using ICSharpCode.NRefactory.TypeSystem;
 
 namespace ICSharpCode.NRefactory.CSharp.Refactoring
 {
diff --git a/ICSharpCode.NRefactory.CSharp/Refactoring/CodeIssues/RedundantCaseLabelIssue.cs b/ICSharpCode.NRefactory.CSharp/Refactoring/CodeIssues/RedundantCaseLabelIssue.cs
index dd82e8e3a3..dc915b49ed 100644
--- a/ICSharpCode.NRefactory.CSharp/Refactoring/CodeIssues/RedundantCaseLabelIssue.cs
+++ b/ICSharpCode.NRefactory.CSharp/Refactoring/CodeIssues/RedundantCaseLabelIssue.cs
@@ -25,7 +25,6 @@
 // THE SOFTWARE.
 
 using System.Collections.Generic;
-using System.Linq;
 
 namespace ICSharpCode.NRefactory.CSharp.Refactoring
 {
diff --git a/ICSharpCode.NRefactory.CSharp/Refactoring/CodeIssues/RedundantFieldInitializerIssue.cs b/ICSharpCode.NRefactory.CSharp/Refactoring/CodeIssues/RedundantFieldInitializerIssue.cs
index 27f24814a2..d5bb988d92 100644
--- a/ICSharpCode.NRefactory.CSharp/Refactoring/CodeIssues/RedundantFieldInitializerIssue.cs
+++ b/ICSharpCode.NRefactory.CSharp/Refactoring/CodeIssues/RedundantFieldInitializerIssue.cs
@@ -25,7 +25,6 @@
 // THE SOFTWARE.
 
 using System.Collections.Generic;
-using ICSharpCode.NRefactory.TypeSystem;
 using ICSharpCode.NRefactory.PatternMatching;
 
 namespace ICSharpCode.NRefactory.CSharp.Refactoring
diff --git a/ICSharpCode.NRefactory.CSharp/Refactoring/CodeIssues/VariableOnlyAssignedIssues/ParameterOnlyAssignedIssue.cs b/ICSharpCode.NRefactory.CSharp/Refactoring/CodeIssues/VariableOnlyAssignedIssues/ParameterOnlyAssignedIssue.cs
index 8b2a50b281..dd4b617155 100644
--- a/ICSharpCode.NRefactory.CSharp/Refactoring/CodeIssues/VariableOnlyAssignedIssues/ParameterOnlyAssignedIssue.cs
+++ b/ICSharpCode.NRefactory.CSharp/Refactoring/CodeIssues/VariableOnlyAssignedIssues/ParameterOnlyAssignedIssue.cs
@@ -24,7 +24,6 @@
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 // THE SOFTWARE.
 
-using System;
 using ICSharpCode.NRefactory.Semantics;
 
 namespace ICSharpCode.NRefactory.CSharp.Refactoring