1 files changed, 4 insertions, 0 deletions

diff --git a/src/cuchaz/enigma/bytecode/ClassRenamer.java b/src/cuchaz/enigma/bytecode/ClassRenamer.java
index cba5861..f3a8c0e 100644
--- a/src/cuchaz/enigma/bytecode/ClassRenamer.java
+++ b/src/cuchaz/enigma/bytecode/ClassRenamer.java
@@ -45,6 +45,10 @@ public class ClassRenamer
                         {
                                 ClassEntry inClassEntry = new ClassEntry( Descriptor.toJvmName( attr.innerClass( i ) ) );
                                 ClassEntry outClassEntry = map.get( inClassEntry );
+                                if( outClassEntry == null )
+                                {
+                                        continue;
+                                }
                                 attr.setInnerClassIndex( i, constants.addClassInfo( outClassEntry.getName() ) );
                                 if( attr.outerClassIndex( i ) != 0 )
                                 {