diff --git a/compiler/backend/src/org/jetbrains/jet/codegen/signature/BothSignatureWriter.java b/compiler/backend/src/org/jetbrains/jet/codegen/signature/BothSignatureWriter.java
index 1619eac40b6..bf733044928 100644
--- a/compiler/backend/src/org/jetbrains/jet/codegen/signature/BothSignatureWriter.java
+++ b/compiler/backend/src/org/jetbrains/jet/codegen/signature/BothSignatureWriter.java
@@ -525,18 +525,27 @@ public class BothSignatureWriter {
 
     @NotNull
     public JvmMethodSignature makeJvmMethodSignature(String name) {
-        if (needGenerics) {
-            return new JvmMethodSignature(
-                    makeAsmMethod(name),
-                    makeJavaGenericSignature(),
-                    makeKotlinMethodTypeParameters(),
-                    makeKotlinParameterTypes(),
-                    makeKotlinReturnTypeSignature()
-            );
-        }
-        else {
-            return new JvmMethodSignature(makeAsmMethod(name), makeKotlinParameterTypes());
-        }
+        return new JvmMethodSignature(
+                makeAsmMethod(name),
+                needGenerics ? makeJavaGenericSignature() : null,
+                needGenerics ? makeKotlinMethodTypeParameters() : null,
+                makeKotlinParameterTypes(),
+                makeKotlinReturnTypeSignature(),
+                needGenerics
+        );
+    }
+
+    @NotNull
+    public JvmPropertyAccessorSignature makeJvmPropertyAccessorSignature(String name, boolean isGetter) {
+        return new JvmPropertyAccessorSignature(
+                makeAsmMethod(name),
+                needGenerics ? makeJavaGenericSignature() : null,
+                needGenerics ? makeKotlinMethodTypeParameters() : null,
+                makeKotlinParameterTypes(),
+                makeKotlinReturnTypeSignature(),
+                needGenerics,
+                isGetter
+        );
     }
 }
 
diff --git a/compiler/backend/src/org/jetbrains/jet/codegen/signature/JvmMethodSignature.java b/compiler/backend/src/org/jetbrains/jet/codegen/signature/JvmMethodSignature.java
index 85e7391c18c..c23af8f1c0a 100644
--- a/compiler/backend/src/org/jetbrains/jet/codegen/signature/JvmMethodSignature.java
+++ b/compiler/backend/src/org/jetbrains/jet/codegen/signature/JvmMethodSignature.java
@@ -43,38 +43,20 @@ public class JvmMethodSignature {
      */
     private final boolean genericsAvailable;
 
-    public JvmMethodSignature(
+    protected JvmMethodSignature(
             @NotNull Method asmMethod,
             @Nullable String genericsSignature,
             @Nullable String kotlinTypeParameters,
             @NotNull List<JvmMethodParameterSignature> kotlinParameterTypes,
-            @NotNull String kotlinReturnType
+            @NotNull String kotlinReturnType,
+            boolean genericsAvailable
     ) {
         this.asmMethod = asmMethod;
         this.genericsSignature = genericsSignature;
         this.kotlinTypeParameter = kotlinTypeParameters;
         this.kotlinParameterTypes = kotlinParameterTypes;
         this.kotlinReturnType = kotlinReturnType;
-        this.genericsAvailable = true;
-    }
-
-    public JvmMethodSignature(@NotNull Method asmMethod, @NotNull List<JvmMethodParameterSignature> kotlinParameterTypes) {
-        this.asmMethod = asmMethod;
-        this.genericsSignature = null;
-        this.kotlinTypeParameter = null;
-        this.kotlinParameterTypes = kotlinParameterTypes;
-        this.kotlinReturnType = "";
-        this.genericsAvailable = false;
-    }
-
-    public static JvmMethodSignature simple(
-            @NotNull String methodName,
-            @NotNull Type returnType,
-            @NotNull List<JvmMethodParameterSignature> parameterSignatures
-    ) {
-        List<Type> types = getTypes(parameterSignatures);
-        return new JvmMethodSignature(new Method(methodName, returnType, types.toArray(new Type[types.size()])),
-                                      parameterSignatures);
+        this.genericsAvailable = genericsAvailable;
     }
 
     @NotNull
diff --git a/compiler/backend/src/org/jetbrains/jet/codegen/signature/JvmPropertyAccessorSignature.java b/compiler/backend/src/org/jetbrains/jet/codegen/signature/JvmPropertyAccessorSignature.java
index b0ea8cfb508..96a26b9d9cd 100644
--- a/compiler/backend/src/org/jetbrains/jet/codegen/signature/JvmPropertyAccessorSignature.java
+++ b/compiler/backend/src/org/jetbrains/jet/codegen/signature/JvmPropertyAccessorSignature.java
@@ -17,25 +17,36 @@
 package org.jetbrains.jet.codegen.signature;
 
 import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+import org.jetbrains.asm4.commons.Method;
 
-public class JvmPropertyAccessorSignature {
-    @NotNull
-    private final JvmMethodSignature jvmMethodSignature;
-    @NotNull
-    private final String propertyTypeKotlinSignature;
+import java.util.List;
 
-    public JvmPropertyAccessorSignature(@NotNull JvmMethodSignature jvmMethodSignature, @NotNull String propertyTypeKotlinSignature) {
-        this.jvmMethodSignature = jvmMethodSignature;
-        this.propertyTypeKotlinSignature = propertyTypeKotlinSignature;
+public class JvmPropertyAccessorSignature extends JvmMethodSignature {
+
+    private final boolean isGetter;
+
+    protected JvmPropertyAccessorSignature(
+            @NotNull Method asmMethod,
+            @Nullable String genericsSignature,
+            @Nullable String kotlinTypeParameters,
+            @NotNull List<JvmMethodParameterSignature> kotlinParameterTypes,
+            @NotNull String kotlinReturnType,
+            boolean needGenerics,
+            boolean isGetter
+    ) {
+        super(asmMethod, genericsSignature, kotlinTypeParameters, kotlinParameterTypes,
+              kotlinReturnType, needGenerics);
+        this.isGetter = isGetter;
     }
 
     @NotNull
     public JvmMethodSignature getJvmMethodSignature() {
-        return jvmMethodSignature;
+        return this;
     }
 
     @NotNull
     public String getPropertyTypeKotlinSignature() {
-        return propertyTypeKotlinSignature;
+        return isGetter ? getKotlinReturnType() : getKotlinParameterType(getParameterCount() - 1);
     }
 }
diff --git a/compiler/backend/src/org/jetbrains/jet/codegen/state/JetTypeMapper.java b/compiler/backend/src/org/jetbrains/jet/codegen/state/JetTypeMapper.java
index c9f1ee4ce31..c3df5ff1e4b 100644
--- a/compiler/backend/src/org/jetbrains/jet/codegen/state/JetTypeMapper.java
+++ b/compiler/backend/src/org/jetbrains/jet/codegen/state/JetTypeMapper.java
@@ -736,8 +736,6 @@ public class JetTypeMapper extends BindingTraceAware {
 
     @NotNull
     public JvmPropertyAccessorSignature mapGetterSignature(PropertyDescriptor descriptor, OwnerKind kind) {
-        String name = getPropertyAccessorName(descriptor, true);
-
         // TODO: do not genClassOrObject generics if not needed
         BothSignatureWriter signatureWriter = new BothSignatureWriter(BothSignatureWriter.Mode.METHOD, true);
 
@@ -752,9 +750,8 @@ public class JetTypeMapper extends BindingTraceAware {
         mapType(descriptor.getType(), signatureWriter, JetTypeMapperMode.VALUE, Variance.OUT_VARIANCE);
         signatureWriter.writeReturnTypeEnd();
 
-        JvmMethodSignature jvmMethodSignature = signatureWriter.makeJvmMethodSignature(name);
-
-        return new JvmPropertyAccessorSignature(jvmMethodSignature, jvmMethodSignature.getKotlinReturnType());
+        String name = getPropertyAccessorName(descriptor, true);
+        return signatureWriter.makeJvmPropertyAccessorSignature(name, true);
     }
 
 
@@ -776,9 +773,7 @@ public class JetTypeMapper extends BindingTraceAware {
         signatureWriter.writeVoidReturn();
 
         String name = getPropertyAccessorName(descriptor, false);
-        JvmMethodSignature jvmMethodSignature = signatureWriter.makeJvmMethodSignature(name);
-        return new JvmPropertyAccessorSignature(jvmMethodSignature,
-                                                jvmMethodSignature.getKotlinParameterType(jvmMethodSignature.getParameterCount() - 1));
+        return signatureWriter.makeJvmPropertyAccessorSignature(name, false);
     }
 
     private void writeParameter(BothSignatureWriter signatureWriter, JetType outType) {