diff --git a/reactos/include/reactos/version.cmake b/reactos/include/reactos/version.cmake
index 6de2642a279..4e9667dec38 100644
--- a/reactos/include/reactos/version.cmake
+++ b/reactos/include/reactos/version.cmake
@@ -37,10 +37,10 @@ set(DLL_VERSION_STR "${REACTOS_DLL_VERSION_MAJOR}.${KERNEL_VERSION_MINOR}-${KERN
 # get svn revision number
 set(REVISION "rUNKNOWN")
 set(KERNEL_VERSION_BUILD_HEX "0")
-if(EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/.svn")
+if(EXISTS "${REACTOS_SOURCE_DIR}/.svn" OR EXISTS "${REACTOS_SOURCE_DIR}/../.svn")
     find_package(Subversion)
     if(Subversion_FOUND)
-        subversion_wc_info(${CMAKE_CURRENT_SOURCE_DIR} SVNINFO)
+        subversion_wc_info(${REACTOS_SOURCE_DIR} SVNINFO)
         if(SVNINFO_WC_REVISION)
             set(REVISION "r${SVNINFO_WC_REVISION}")
             converttohex(${SVNINFO_WC_REVISION} KERNEL_VERSION_BUILD_HEX)