diff --git a/mdf4reader.py b/mdf4reader.py
index 5d004a2..286e92c 100644
--- a/mdf4reader.py
+++ b/mdf4reader.py
@@ -658,9 +658,9 @@ def __init__(self, info, dataGroup, channelGroup, recordIDsize, byte_aligned=Tru
         self.nBytes = info['CGBlock'][dataGroup][channelGroup]['cg_invalid_bytes']
         self.bitCount = self.nBytes * 8
         self.channelType = 0  # fixed length data
-        self.dataFormat = arrayformat4(self.signalDataType, self.bitCount)
+        self.dataFormat = str(self.nBytes) + 'V'
         self.RecordFormat = ((self.name, convertName(self.name)), self.dataFormat)
-        self.Format = datatypeformat4(self.signalDataType, self.bitCount)
+        self.Format = str(self.nBytes) + 's'
         self.CFormat = Struct(self.Format)
         self.bitOffset = 0
         self.byteOffset = info['CGBlock'][dataGroup][channelGroup]['cg_data_bytes']
diff --git a/setup.py b/setup.py
index ece3569..914e2c6 100644
--- a/setup.py
+++ b/setup.py
@@ -20,7 +20,7 @@
     long_description=long_description,
 
     # The project's main homepage.
-    url='https://code.google.com/p/mdfreader',
+    url='https://github.com/ratal/mdfreader',
 
     # Author details
     author='Aymeric Rateau',
@@ -66,7 +66,7 @@
     # project is installed. For an analysis of "install_requires" vs pip's
     # requirements files see:
     # https://packaging.python.org/en/latest/technical.html#install-requires-vs-requirements-files
-    install_requires=['numpy>=1.6', 'Sympy', 'bitarray'],
+    install_requires=['numpy>=1.6', 'sympy', 'bitarray'],
 
     # List additional groups of dependencies here (e.g. development dependencies).
     # You can install these using the following syntax, for example: