diff --git a/src/Build/CMakeLists.txt b/src/Build/CMakeLists.txt
index af4727820..924f4859e 100644
--- a/src/Build/CMakeLists.txt
+++ b/src/Build/CMakeLists.txt
@@ -3,6 +3,9 @@ set(PACKAGE_WCREF "$WCREV$")
 set(PACKAGE_WCDATE "$WCDATE$")
 set(PACKAGE_WCURL "$WCURL$")
 
+# If the sources don't include a Version.h then create one
+if (NOT EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/Version.h)
+
 configure_file(${CMAKE_CURRENT_SOURCE_DIR}/Version.h.cmake
                ${CMAKE_CURRENT_BINARY_DIR}/Version.h.in
 )
@@ -19,3 +22,4 @@ if (NOT EXISTS ${CMAKE_CURRENT_BINARY_DIR}/Version.h)
                    ${CMAKE_CURRENT_BINARY_DIR}/Version.h
     )
 endif (NOT EXISTS ${CMAKE_CURRENT_BINARY_DIR}/Version.h)
+endif (NOT EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/Version.h)