diff --git a/src/ARSCLib/android/util/AttributeSet.java b/src/ARSCLib/android/util/AttributeSet.java
index 7c73df73..9c66f2ab 100644
--- a/src/ARSCLib/android/util/AttributeSet.java
+++ b/src/ARSCLib/android/util/AttributeSet.java
@@ -18,9 +18,9 @@ package android.util;
 
 public interface AttributeSet {
     public int getAttributeCount();
-    default String getAttributeNamespace (int index) {
+    /*default*/ String getAttributeNamespace (int index); /* {
         return null;
-    }
+    }*/
     public String getAttributeName(int index);
     public String getAttributeValue(int index);
     public String getAttributeValue(String namespace, String name);
diff --git a/src/api-impl/meson.build b/src/api-impl/meson.build
index 879222b1..07f56435 100644
--- a/src/api-impl/meson.build
+++ b/src/api-impl/meson.build
@@ -489,6 +489,6 @@ hax_jar = jar('hax', [
               ],
               java_args: [
               	'-bootclasspath', bootclasspath,
-              	'-source', '1.7', '-target', '1.7',
+              	'-source', '1.8', '-target', '1.8',
               	'-h', join_paths(dir_base, 'src/api-impl-jni/generated_headers')
               ])