diff --git a/src/org/jetbrains/java/decompiler/main/collectors/BytecodeSourceMapper.java b/src/org/jetbrains/java/decompiler/main/collectors/BytecodeSourceMapper.java
index ca37b5b..6cbaa83 100644
--- a/src/org/jetbrains/java/decompiler/main/collectors/BytecodeSourceMapper.java
+++ b/src/org/jetbrains/java/decompiler/main/collectors/BytecodeSourceMapper.java
@@ -1,6 +1,9 @@
 package org.jetbrains.java.decompiler.main.collectors;
 
+import java.util.ArrayList;
+import java.util.Collections;
 import java.util.HashMap;
+import java.util.List;
 import java.util.Map.Entry;
 
 import org.jetbrains.java.decompiler.main.DecompilerContext;
@@ -55,9 +58,14 @@ public class BytecodeSourceMapper {
         }
         buffer.appendIndent(1).append("method " + method_entry.getKey() + "{" + lineSeparator);
 
-        for(Entry<Integer, Integer> line : method_mapping.entrySet()) {
-          String strOffset = offsetsToHex ? Integer.toHexString(line.getKey()): line.getKey().toString();
-          buffer.appendIndent(2).append(strOffset).appendIndent(2).append((line.getValue() + offset_total) + lineSeparator);
+        List<Integer> lstBytecodeOffsets = new ArrayList<Integer>(method_mapping.keySet());
+        Collections.sort(lstBytecodeOffsets);
+
+        for(Integer offset : lstBytecodeOffsets) {
+          Integer line = method_mapping.get(offset);
+
+          String strOffset = offsetsToHex ? Integer.toHexString(offset): line.toString();
+          buffer.appendIndent(2).append(strOffset).appendIndent(2).append((line + offset_total) + lineSeparator);
         }
         buffer.appendIndent(1).append("}").appendLineSeparator();
         is_first_method = false;
diff --git a/testData/classes/pkg/TestClassSimpleBytecodeMapping.class b/testData/classes/pkg/TestClassSimpleBytecodeMapping.class
new file mode 100644
index 0000000..1313994
Binary files /dev/null and b/testData/classes/pkg/TestClassSimpleBytecodeMapping.class differ
diff --git a/testData/results/TestClassSimpleBytecodeMapping.dec b/testData/results/TestClassSimpleBytecodeMapping.dec
new file mode 100644
index 0000000..ad02e64
--- /dev/null
+++ b/testData/results/TestClassSimpleBytecodeMapping.dec
@@ -0,0 +1,36 @@
+package pkg;
+
+public class TestClassSimpleBytecodeMapping {
+   public int test() {
+      System.out.println("before");
+      if(Math.random() > 0.0D) {
+         System.out.println("0");
+         return 0;
+      } else {
+         System.out.println("1");
+         return 1;
+      }
+   }
+}
+
+class test/TestClassSimpleBytecodeMapping{
+   method test ()I{
+      0      4
+      3      4
+      5      4
+      8      5
+      b      5
+      c      5
+      d      5
+      10      6
+      13      6
+      15      6
+      18      7
+      19      7
+      1a      9
+      1d      9
+      1f      9
+      22      10
+      23      10
+   }
+}
diff --git a/testData/src/pkg/TestClassSimpleBytecodeMapping.java b/testData/src/pkg/TestClassSimpleBytecodeMapping.java
new file mode 100644
index 0000000..8233fa9
--- /dev/null
+++ b/testData/src/pkg/TestClassSimpleBytecodeMapping.java
@@ -0,0 +1,20 @@
+package pkg;
+
+public class TestClassSimpleBytecodeMapping {
+
+  public TestClassSimpleBytecodeMapping() {}
+  
+  public int test() {
+    
+    System.out.println("before");
+        
+    if(Math.random() > 0) {
+      System.out.println("0");
+      return 0;
+    } else {
+      System.out.println("1");
+      return 1;
+    }
+  }
+
+}