diff --git a/src/calibre/ebooks/unihandecode/__init__.py b/src/calibre/ebooks/unihandecode/__init__.py
index 1412d6a798..c70f0d8a83 100644
--- a/src/calibre/ebooks/unihandecode/__init__.py
+++ b/src/calibre/ebooks/unihandecode/__init__.py
@@ -16,10 +16,10 @@ Tranliterate the string from unicode characters to ASCII in Chinese and others.
 
 '''
 
-from unihandecode.unidecoder import Unidecoder
-from unihandecode.jadecoder import Jadecoder
-from unihandecode.krdecoder import Krdecoder
-from unihandecode.vndecoder import Vndecoder
+from calibre.ebooks.unihandecode.unidecoder import Unidecoder
+from calibre.ebooks.unihandecode.jadecoder import Jadecoder
+from calibre.ebooks.unihandecode.krdecoder import Krdecoder
+from calibre.ebooks.unihandecode.vndecoder import Vndecoder
 
 class Unihandecoder(object):
     preferred_encoding = None
diff --git a/src/calibre/ebooks/unihandecode/jadecoder.py b/src/calibre/ebooks/unihandecode/jadecoder.py
index e8d7eac51f..7815a09738 100644
--- a/src/calibre/ebooks/unihandecode/jadecoder.py
+++ b/src/calibre/ebooks/unihandecode/jadecoder.py
@@ -18,10 +18,10 @@ Copyright (c) 2010 Hiroshi Miura
 '''
 
 import os, re
-from unihandecode.unidecoder import Unidecoder
-from unihandecode.unicodepoints import CODEPOINTS
-from unihandecode.jacodepoints import CODEPOINTS as JACODES
-from unihandecode.pykakasi import kakasi
+from calibre.ebooks.unihandecode.unidecoder import Unidecoder
+from calibre.ebooks.unihandecode.unicodepoints import CODEPOINTS
+from calibre.ebooks.unihandecode.jacodepoints import CODEPOINTS as JACODES
+from calibre.ebooks.unihandecode.pykakasi import kakasi
 
 class Jadecoder(Unidecoder):
     kakasi = None
diff --git a/src/calibre/ebooks/unihandecode/krdecoder.py b/src/calibre/ebooks/unihandecode/krdecoder.py
index 16a2884153..363a8b751a 100644
--- a/src/calibre/ebooks/unihandecode/krdecoder.py
+++ b/src/calibre/ebooks/unihandecode/krdecoder.py
@@ -11,9 +11,9 @@ Based on unidecoder.
 '''
 
 import re
-from unihandecode.unidecoder import Unidecoder
-from unihandecode.krcodepoints import CODEPOINTS as HANCODES
-from unihandecode.unicodepoints import CODEPOINTS
+from calibre.ebooks.unihandecode.unidecoder import Unidecoder
+from calibre.ebooks.unihandecode.krcodepoints import CODEPOINTS as HANCODES
+from calibre.ebooks.unihandecode.unicodepoints import CODEPOINTS
 
 class Krdecoder(Unidecoder):
 
diff --git a/src/calibre/ebooks/unihandecode/pykakasi/__init__.py b/src/calibre/ebooks/unihandecode/pykakasi/__init__.py
index 0afc71bcbf..3131bfb25a 100644
--- a/src/calibre/ebooks/unihandecode/pykakasi/__init__.py
+++ b/src/calibre/ebooks/unihandecode/pykakasi/__init__.py
@@ -1,4 +1,4 @@
-from kakasi import kakasi
+from calibre.ebooks.unihandecode.pykakasi.kakasi import kakasi
 
 __all__ = ["pykakasi"]
 
diff --git a/src/calibre/ebooks/unihandecode/unidecoder.py b/src/calibre/ebooks/unihandecode/unidecoder.py
index b68a95faaf..a365248948 100644
--- a/src/calibre/ebooks/unihandecode/unidecoder.py
+++ b/src/calibre/ebooks/unihandecode/unidecoder.py
@@ -59,8 +59,8 @@ it under the same terms as Perl itself.
 '''
 
 import re
-from unihandecode.unicodepoints import CODEPOINTS
-from unihandecode.zhcodepoints import CODEPOINTS as HANCODES
+from calibre.ebooks.unihandecode.unicodepoints import CODEPOINTS
+from calibre.ebooks.unihandecode.zhcodepoints import CODEPOINTS as HANCODES
 
 class Unidecoder(object):
 
diff --git a/src/calibre/ebooks/unihandecode/vndecoder.py b/src/calibre/ebooks/unihandecode/vndecoder.py
index 7589aae225..09f435e96e 100644
--- a/src/calibre/ebooks/unihandecode/vndecoder.py
+++ b/src/calibre/ebooks/unihandecode/vndecoder.py
@@ -10,9 +10,9 @@ Decode unicode text to an ASCII representation of the text in Vietnamese.
 '''
 
 import re
-from unihandecode.unidecoder import Unidecoder
-from unihandecode.vncodepoints import CODEPOINTS as HANCODES
-from unihandecode.unicodepoints import CODEPOINTS
+from calibre.ebooks.unihandecode.unidecoder import Unidecoder
+from calibre.ebooks.unihandecode.vncodepoints import CODEPOINTS as HANCODES
+from calibre.ebooks.unihandecode.unicodepoints import CODEPOINTS
 
 class Vndecoder(Unidecoder):