diff --git a/CMakeLists.txt b/CMakeLists.txt
index 988a701e9ca..68fdb5bd2c8 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -64,9 +64,7 @@ if ( ${CGAL_SCM_NAME} STREQUAL "svn" )
     set(${variable} ${${variable}} PARENT_SCOPE)
   endfunction(Subversion_GET_URL)
 
-  Subversion_GET_URL("${CGAL_INSTALLATION_PACKAGE_DIR}" CGAL_INSTALLATION_SVN_URL)
-  # Remove the "/Installation" suffix.
-  string(REGEX REPLACE "(.*)/Installation" "\\1" CGAL_TMP_SVN_BRANCH_NAME "${CGAL_INSTALLATION_SVN_URL}")
+  Subversion_GET_URL("${CMAKE_CURRENT_SOURCE_DIR}" CGAL_TMP_SVN_BRANCH_NAME)
   # Remove the prefix of the URL "https://scm.gforge.inria.fr/".
   string(REGEX REPLACE "[a-z+]+://[a-z0-9.]+" "" CGAL_TMP_SVN_BRANCH_NAME "${CGAL_TMP_SVN_BRANCH_NAME}")
 
diff --git a/Installation/CMakeLists.txt b/Installation/CMakeLists.txt
index 02e39dfacc1..d3b10355ba0 100644
--- a/Installation/CMakeLists.txt
+++ b/Installation/CMakeLists.txt
@@ -134,7 +134,7 @@ if ( CGAL_BRANCH_BUILD )
   if ( ${CGAL_SCM_NAME} STREQUAL "svn" )
 
     # The function Subversion_GET_REVISION is defined in ../CMakeLists.txt
-    Subversion_GET_REVISION("${CGAL_INSTALLATION_PACKAGE_DIR}" CGAL_TMP_REVISION)
+    Subversion_GET_REVISION("${CMAKE_SOURCE_DIR}" CGAL_TMP_REVISION)
     set(CGAL_CREATED_SVN_REVISION "${CGAL_TMP_REVISION}")
     message(STATUS "CGAL_SVN_REVISION is ${CGAL_TMP_REVISION}")