diff --git a/compiler/Java_CodeGen.jrag b/compiler/Java_CodeGen.jrag
index ae4805ea95c9779e621a970b2c0bee5a43a2a2b1..62dcd575b295b0cf2f22427a12be2638a7aab698 100644
--- a/compiler/Java_CodeGen.jrag
+++ b/compiler/Java_CodeGen.jrag
@@ -393,10 +393,7 @@ aspect Java_Class {
       }
 
       env.println("import se.lth.control.labcomm"+env.verStr+".SampleType;");
-      if (getType().Java_needInstance()) {
-          env.println("import java.io.IOException;");
-          env.println("import se.lth.control.labcomm"+env.verStr+".Decoder;");
-      }
+
       if (getType().Java_needInstance() || hasDependencies()) {
           env.println("import se.lth.control.labcomm"+env.verStr+".Encoder;");
           env.println("import se.lth.control.labcomm"+env.verStr+".SampleDispatcher;");
diff --git a/compiler/Signature.jrag b/compiler/Signature.jrag
index 8004f2fe861c118d67c0e2dc46bcbe055a5bf4db..973afb4af13e96babc1170d6a397b7a3eca62ee1 100644
--- a/compiler/Signature.jrag
+++ b/compiler/Signature.jrag
@@ -114,110 +114,4 @@ aspect Signature {
     flatSignature(result);
     return result;
   }
-
-  public void ASTNode.flatSignature(SignatureList list) {
-    throw new Error(this.getClass().getName() + 
-                    ".flatSignature(SignatureList list)" + 
-                    " not declared");
-  }
-
-  public void TypeDecl.flatSignature(SignatureList list) {
-    getType().flatSignature(list);
-  }
-
-  public void SampleDecl.flatSignature(SignatureList list) {
-    getType().flatSignature(list);
-  }
-
-  public void VoidType.flatSignature(SignatureList list) {
-    list.addInt(LABCOMM_STRUCT, "void");
-    list.addInt(0, null);
-  }
-
-  public void PrimType.flatSignature(SignatureList list) {
-    list.addInt(getToken(), null);
-  }
-
-  public void UserType.flatSignature(SignatureList list) {
-    lookupType(getName()).flatSignature(list);
-  }
-
-  public void ArrayType.flatSignature(SignatureList list) {
-    list.addInt(LABCOMM_ARRAY, signatureComment());
-    list.indent();
-    list.addInt(getNumExp(), null);
-    for (int i = 0 ; i < getNumExp() ; i++) {
-      getExp(i).flatSignature(list);
-    }
-    getType().flatSignature(list);
-    list.unindent();
-    list.add(null, "}");
-  }
-
-  public void StructType.flatSignature(SignatureList list) {
-    list.addInt(LABCOMM_STRUCT, "struct { " + getNumField() + " fields");
-    list.indent();
-    list.addInt(getNumField(), null);
-    for (int i = 0 ; i < getNumField() ; i++) {
-      getField(i).flatSignature(list);
-    }
-    list.unindent();
-    list.add(null, "}");
-  }
-
-  public void Field.flatSignature(SignatureList list) {
-    list.addString(getName(), signatureComment());
-    getType().flatSignature(list);
-  }
-
-  public void IntegerLiteral.flatSignature(SignatureList list) {
-    list.addInt(Integer.parseInt(getValue()), null);
-  }
-
-  public void VariableSize.flatSignature(SignatureList list) {
-    list.addInt(0, null);
-  }
-
-  public String ArrayType.signatureComment() {
-    StringBuffer result = new StringBuffer("array [");
-    for (int i = 0 ; i < getNumExp() ; i++) {
-      if (i > 0) {
-	result.append(", ");
-      }
-      result.append(getExp(i).signatureComment());
-    }
-    result.append("]");
-    return result.toString();
-  }
-
-  public String ASTNode.signatureComment() {
-    throw new Error(this.getClass().getName() + 
-                    ".signatureComment()" + 
-                    " not declared");
-  }
-
-  public String Field.signatureComment() {
-    return getType().signatureComment() + " '" + getName() +"'";
-  }
-
-  public String PrimType.signatureComment() {
-    return getName();
-  }
-
-  public String UserType.signatureComment() {
-    return getName();
-  }
-
-  public String StructType.signatureComment() {
-    return "struct";
-  }
-
-  public String IntegerLiteral.signatureComment() {
-    return getValue();
-  }
-
-  public String VariableSize.signatureComment() {
-    return "_";
-  }
-
 }