diff --git a/src/main/java/org/codehaus/groovy/classgen/Verifier.java b/src/main/java/org/codehaus/groovy/classgen/Verifier.java
index 248bec3c985..671f8a270ea 100644
--- a/src/main/java/org/codehaus/groovy/classgen/Verifier.java
+++ b/src/main/java/org/codehaus/groovy/classgen/Verifier.java
@@ -86,6 +86,7 @@
 import java.util.ListIterator;
 import java.util.Map;
 import java.util.Set;
+import java.util.logging.Logger;
 
 import static java.lang.reflect.Modifier.isFinal;
 import static java.lang.reflect.Modifier.isPrivate;
@@ -149,6 +150,8 @@
  */
 public class Verifier implements GroovyClassVisitor, Opcodes {
 
+    private static final Logger LOG = Logger.getLogger(Verifier.class.getName());
+
     public static final String SWAP_INIT = "__$swapInit";
     public static final String STATIC_METACLASS_BOOL = "__$stMC";
     public static final String INITIAL_EXPRESSION = "INITIAL_EXPRESSION";
@@ -364,9 +367,9 @@ private static void checkForDuplicateInterfaces(final ClassNode cn) {
                                 if (t.equals(in)) {
                                     String one = in.toString(false), two = t.toString(false);
                                     if (!one.equals(two))
-                                        throw new RuntimeParserException("The interface " + in.getNameWithoutPackage() +
-                                            " cannot be implemented more than once with different arguments: " + one + " and " + two, cn);
-                                    break;
+                                        LOG.warning("Warning: " + "on " + cn.getName() + " the interface " + in.getNameWithoutPackage() +
+                                            " was implemented more than once with different arguments: " + one + " and " + two + ",  " +
+                                            cn.getName() + " will only implement the lowest level " + in.getNameWithoutPackage());
                                 }
                             }
                         }