diff --git a/kbinxml.py b/kbinxml.py
index c3caba1..87c8ce8 100644
--- a/kbinxml.py
+++ b/kbinxml.py
@@ -67,13 +67,13 @@ class KBinXML():
 
     def data_grab_auto(self):
         size = self.dataBuf.get_s32()
-        ret = self.dataBuf.get('b', size)
+        ret = self.dataBuf.get('B', size)
         self.dataBuf.realign_reads()
         return ret
 
     def data_append_auto(self, data):
         self.dataBuf.append_s32(len(data))
-        self.dataBuf.append(data, 'b', len(data))
+        self.dataBuf.append(data, 'B', len(data))
         self.dataBuf.realign_writes()
 
     def data_grab_string(self):
diff --git a/test.py b/test.py
index 6b1b8bb..81ecbad 100644
--- a/test.py
+++ b/test.py
@@ -12,9 +12,9 @@ with open('testcases_out.kbin', 'rb') as f:
 k = KBinXML(xml_in)
 kbin = k.to_binary()
 if kbin != expected_bin:
-    with open('failed_test.bin', 'wb') as f:
+    with open('failed_test.kbin', 'wb') as f:
         f.write(kbin)
-    raise AssertionError('Binary output does not match, check failed_test.bin')
+    raise AssertionError('Binary output does not match, check failed_test.kbin')
 else:
     print('XML -> Binary correct!')
 
diff --git a/testcases.xml b/testcases.xml
index c7d7bb2..d4749cc 100644
--- a/testcases.xml
+++ b/testcases.xml
@@ -6,7 +6,7 @@
     <!-- Attributes plus text -->
     <entry attr="test" attr2="best" __type="str">Hello, world!</entry>
     <!-- Testing encoding, plus __type-less should become string -->
-    <superstar>ƒV@ƒCƒX@ƒ}ƒC@ƒƒCƒt</superstar>
+    <superstar babe="ƒ~ƒcƒ‹">ƒV@ƒCƒX@ƒ}ƒC@ƒƒCƒt</superstar>
     <!-- Testing 6bit conversion -->
     <xXx_T4GG3R_xXx __type="3u8">8 9 10</xXx_T4GG3R_xXx>
     <!-- Shouldn't have alignment issues from the 3u8 -->
diff --git a/testcases_out.kbin b/testcases_out.kbin
index 31fdc48..f258d5c 100644
Binary files a/testcases_out.kbin and b/testcases_out.kbin differ
diff --git a/testcases_out.xml b/testcases_out.xml
index 0a65831..96bb430 100644
--- a/testcases_out.xml
+++ b/testcases_out.xml
@@ -2,7 +2,7 @@
 <test>
   <entry __type="ip4" __count="2">127.0.0.1 192.168.0.1</entry>
   <entry __type="str" attr="test" attr2="best">Hello, world!</entry>
-  <superstar __type="str">ใ‚ทใ€€ใ‚คใ‚นใ€€ใƒžใ‚คใ€€ใƒฏใ‚คใƒ•</superstar>
+  <superstar __type="str" babe="ใƒŸใƒ„ใƒซ">ใ‚ทใ€€ใ‚คใ‚นใ€€ใƒžใ‚คใ€€ใƒฏใ‚คใƒ•</superstar>
   <xXx_T4GG3R_xXx __type="3u8">8 9 10</xXx_T4GG3R_xXx>
   <aligned __type="u8">12</aligned>
   <entry __type="bin" __size="4">deadbeef</entry>