diff --git a/bytestring-builder.cabal b/bytestring-builder.cabal
--- a/bytestring-builder.cabal
+++ b/bytestring-builder.cabal
@@ -1,5 +1,5 @@
 name:                bytestring-builder
-version:             0.10.4.1.1
+version:             0.10.4.1.2
 synopsis:            The new bytestring builder, packaged outside of GHC
 description:
   This is the bytestring builder that is debuting in bytestring-0.10.4.0, which
@@ -27,10 +27,11 @@
   deprecated in 7.10.
 license:             BSD3
 license-file:        LICENSE
-author:              Simon Meier, Jasper Van der Jeugt
+author:              Simon Meier, Jasper Van der Jeugt, Duncan Coutts
 maintainer:          Leon P Smith <leon@melding-monads.com>
 copyright:           (c) 2010 Jasper Van der Jeugt
                      (c) 2010-2013 Simon Meier
+                     (c) 2012-2013 Duncan Coutts
 category:            Data
 build-type:          Simple
 extra-source-files:
@@ -50,7 +51,7 @@
 source-repository this
   type:     git
   location: http://github.com/lpsmith/bytestring-builder
-  tag:      v0.10.4.1.1
+  tag:      v0.10.4.1.2
 
 Flag bytestring_has_builder
   default: True
@@ -63,7 +64,7 @@
       build-depends:     bytestring >= 0.10.4
       -- package is empty for bytestring >= 0.10.4
   else
-      build-depends:     bytestring >= 0.9     && < 0.10.4
+      build-depends:     bytestring >= 0.9     && < 0.10.2
       hs-source-dirs: src
       c-sources: cbits/itoa.c
                  cbits/fpstring.c
diff --git a/cbits/itoa.c b/cbits/itoa.c
--- a/cbits/itoa.c
+++ b/cbits/itoa.c
@@ -179,7 +179,7 @@
 ///////////////////////
 
 // unsigned ints (32 bit words)
-char* bytestring_bytestring_uint_hex (unsigned int x, char* buf) {
+char* bytestring_builder_uint_hex (unsigned int x, char* buf) {
     // write hex representation in reverse order
     char c, *ptr = buf, *next_free;
     do {
@@ -197,7 +197,7 @@
 };
 
 // unsigned long ints (64 bit words)
-char* bytestring_bytestring_long_long_uint_hex (long long unsigned int x, char* buf) {
+char* bytestring_builder_long_long_uint_hex (long long unsigned int x, char* buf) {
     // write hex representation in reverse order
     char c, *ptr = buf, *next_free;
     do {
diff --git a/src/Data/ByteString/Builder/Prim/ASCII.hs b/src/Data/ByteString/Builder/Prim/ASCII.hs
--- a/src/Data/ByteString/Builder/Prim/ASCII.hs
+++ b/src/Data/ByteString/Builder/Prim/ASCII.hs
@@ -186,10 +186,10 @@
 -- without lead
 ---------------
 
-foreign import ccall unsafe "static bytestring_bytestring_uint_hex" c_uint_hex
+foreign import ccall unsafe "static bytestring_builder_uint_hex" c_uint_hex
     :: CUInt -> Ptr Word8 -> IO (Ptr Word8)
 
-foreign import ccall unsafe "static bytestring_bytestring_long_long_uint_hex" c_long_long_uint_hex
+foreign import ccall unsafe "static bytestring_builder_long_long_uint_hex" c_long_long_uint_hex
     :: CULLong -> Ptr Word8 -> IO (Ptr Word8)
 
 {-# INLINE encodeWordHex #-}