diff --git a/debian/patches/add_symbols_versioning.patch b/debian/patches/add_symbols_versioning.patch
index ac2540a2..2d423298 100644
--- a/debian/patches/add_symbols_versioning.patch
+++ b/debian/patches/add_symbols_versioning.patch
@@ -4,7 +4,7 @@ This patch adds a very simple linker script to version the lib's symbols
 and thus trying to avoid crashes if an application loads two different
 LLVM versions (as long as they do not share data between them).
 
-Note that we deliberately *don't* make LLVM_4.0 depend on LLVM_4.0:
+Note that we deliberately *don't* make LLVM_3.9 depend on LLVM_3.8:
 they're incompatible and the whole point of this patch is
 to tell the linker that.
 
@@ -12,29 +12,29 @@ Author: Rebecca N. Palmer <rebecca_palmer@zoho.com>
 Author: Lisandro Damían Nicanor Pérez Meyer <lisandro@debian.org>
 Bug-Debian: https://bugs.debian.org/848368
 
-Index: llvm-toolchain-snapshot_5.0~svn298832/tools/llvm-shlib/CMakeLists.txt
+Index: llvm-toolchain-4.0_4.0~svn299455/tools/llvm-shlib/CMakeLists.txt
 ===================================================================
---- llvm-toolchain-snapshot_5.0~svn298832.orig/tools/llvm-shlib/CMakeLists.txt
-+++ llvm-toolchain-snapshot_5.0~svn298832/tools/llvm-shlib/CMakeLists.txt
+--- llvm-toolchain-4.0_4.0~svn299455.orig/tools/llvm-shlib/CMakeLists.txt
++++ llvm-toolchain-4.0_4.0~svn299455/tools/llvm-shlib/CMakeLists.txt
 @@ -40,7 +40,7 @@ set_property(TARGET LLVM PROPERTY VERSIO
  list(REMOVE_DUPLICATES LIB_NAMES)
- if(("${CMAKE_SYSTEM_NAME}" STREQUAL "Linux") OR (MINGW) OR ("${CMAKE_SYSTEM_NAME}" STREQUAL "FreeBSD") OR ("${CMAKE_SYSTEM_NAME}" STREQUAL "DragonFly")) # FIXME: It should be "GNU ld for elf"
+ if("${CMAKE_SYSTEM_NAME}" STREQUAL "Linux" OR MINGW) # FIXME: It should be "GNU ld for elf"
    # GNU ld doesn't resolve symbols in the version script.
 -  set(LIB_NAMES -Wl,--whole-archive ${LIB_NAMES} -Wl,--no-whole-archive)
 +  set(LIB_NAMES -Wl,--version-script,${CMAKE_CURRENT_SOURCE_DIR}/simple_version_script.map -Wl,--whole-archive ${LIB_NAMES} -Wl,--no-whole-archive)
  elseif("${CMAKE_SYSTEM_NAME}" STREQUAL "Darwin")
    set(LIB_NAMES -Wl,-all_load ${LIB_NAMES})
  endif()
-Index: llvm-toolchain-snapshot_5.0~svn298832/tools/llvm-shlib/simple_version_script.map
+Index: llvm-toolchain-4.0_4.0~svn299455/tools/llvm-shlib/simple_version_script.map
 ===================================================================
 --- /dev/null
-+++ llvm-toolchain-snapshot_5.0~svn298832/tools/llvm-shlib/simple_version_script.map
++++ llvm-toolchain-4.0_4.0~svn299455/tools/llvm-shlib/simple_version_script.map
 @@ -0,0 +1 @@
 +LLVM_4.0 { global: *; };
-Index: llvm-toolchain-snapshot_5.0~svn298832/cmake/modules/AddLLVM.cmake
+Index: llvm-toolchain-4.0_4.0~svn299455/cmake/modules/AddLLVM.cmake
 ===================================================================
---- llvm-toolchain-snapshot_5.0~svn298832.orig/cmake/modules/AddLLVM.cmake
-+++ llvm-toolchain-snapshot_5.0~svn298832/cmake/modules/AddLLVM.cmake
+--- llvm-toolchain-4.0_4.0~svn299455.orig/cmake/modules/AddLLVM.cmake
++++ llvm-toolchain-4.0_4.0~svn299455/cmake/modules/AddLLVM.cmake
 @@ -82,7 +82,7 @@ function(add_llvm_symbol_exports target_
      set(native_export_file "${target_name}.exports")
      # FIXME: Don't write the "local:" line on OpenBSD.