diff --git a/boost-cmake-soname.patch b/boost-cmake-soname.patch
new file mode 100644
index 0000000..8d732eb
--- /dev/null
+++ b/boost-cmake-soname.patch
@@ -0,0 +1,19 @@
+*** tools/build/CMake/BoostCore.cmake.orig	2010-01-12 20:01:46.006547352 -0800
+--- tools/build/CMake/BoostCore.cmake	2010-01-12 20:02:54.222546929 -0800
+*************** macro(boost_library_variant LIBNAME)
+*** 755,761 ****
+        if (BUILD_SOVERSIONED)
+  	set_target_properties(${VARIANT_LIBNAME}
+  	  PROPERTIES
+! 	  SOVERSION "${BOOST_VERSION}"
+  	  )
+        endif()
+      endif ()
+--- 755,761 ----
+        if (BUILD_SOVERSIONED)
+  	set_target_properties(${VARIANT_LIBNAME}
+  	  PROPERTIES
+! 	  SOVERSION "_FEDORA_SONAME"
+  	  )
+        endif()
+      endif ()
diff --git a/boost.spec b/boost.spec
index 92c5204..0975949 100644
--- a/boost.spec
+++ b/boost.spec
@@ -83,7 +83,7 @@ BuildRequires: chrpath
 
 Patch0: boost-1.46.0-cmakeify.patch
 Patch1: boost-1.46.0-cmakeify-more.patch
-#Patch2: boost-cmake-soname.patch
+Patch2: boost-cmake-soname.patch
 
 # https://svn.boost.org/trac/boost/ticket/4999
 Patch3: boost-1.46.0-signals-erase.patch
@@ -410,6 +410,7 @@ a number of significant features and is now developed independently
 # CMake framework (CMakeLists.txt, *.cmake and documentation files)
 %patch0 -p1
 %patch1 -p1
+sed 's/_FEDORA_SONAME/%{sonamever}/' %{PATCH2} | %{__patch} -p0 --fuzz=0
 
 # fixes
 %patch3 -p1
@@ -828,6 +829,7 @@ find $RPM_BUILD_ROOT%{_includedir}/ \( -name '*.pl' -o -name '*.sh' \) -exec %{_
 %changelog
 * Thu Feb  3 2011 Petr Machata <pmachata@redhat.com> - 1.46.0-0.beta1
 - Package 1.46.0-beta1
+- Reintroduce the soname patch
 - Related: #656410
 
 * Mon Jan 10 2011 Denis Arnaud <denis.arnaud_fedora@m4x.org> - 1.44.0-7