diff --git a/ghc-mmap.spec b/ghc-mmap.spec
index ebb1dea..39fdc4d 100644
--- a/ghc-mmap.spec
+++ b/ghc-mmap.spec
@@ -13,7 +13,7 @@ Modifications are also supported.
 
 Name:           ghc-%{pkg_name}
 Version:        0.5.7
-Release:        8%{?dist}
+Release:        9%{?dist}
 Summary:        %{common_summary}
 
 Group:          System Environment/Libraries
@@ -25,7 +25,7 @@ ExclusiveArch:  %{ghc_arches}
 BuildRequires:  ghc-Cabal-devel
 BuildRequires:  ghc-rpm-macros %{!?without_hscolour:hscolour}
 # END cabal2spec
-BuildRequires:  ghc-bytestring-prof
+BuildRequires:  ghc-bytestring-devel
 
 %description
 %{common_description}
@@ -56,6 +56,9 @@ BuildRequires:  ghc-bytestring-prof
 
 
 %changelog
+* Mon Jul 16 2012 Jens Petersen <petersen@redhat.com> - 0.5.7-9
+- change prof BRs to devel
+
 * Sun Mar 18 2012 Jens Petersen <petersen@redhat.com> - 0.5.7-8
 - update to cabal2spec-0.25