diff --git a/docs/Doxyfile.in b/docs/Doxyfile.in
index 7f407c790..93a26c5a2 100644
--- a/docs/Doxyfile.in
+++ b/docs/Doxyfile.in
@@ -58,7 +58,7 @@ PROJECT_LOGO           =
 # entered, it will be relative to the location where doxygen was started. If
 # left blank the current directory will be used.
 
-OUTPUT_DIRECTORY       = @bin_basedir@/docs
+OUTPUT_DIRECTORY       = @doc_output@
 
 # If the CREATE_SUBDIRS tag is set to YES then doxygen will create 4096 sub-
 # directories (in 2 levels) under the output directory of each output format and
@@ -829,7 +829,7 @@ WARN_LOGFILE           =
 # spaces. See also FILE_PATTERNS and EXTENSION_MAPPING
 # Note: If this tag is empty the current directory is searched.
 
-INPUT                  = @src_basedir@/model/src
+INPUT                  = @src_input@
 
 # This tag can be used to specify the character encoding of the source files
 # that doxygen parses. Internally doxygen uses the UTF-8 encoding. Doxygen uses
diff --git a/docs/cmake/EnableDoxygen.cmake b/docs/cmake/EnableDoxygen.cmake
index 02246f9e5..c413a1036 100644
--- a/docs/cmake/EnableDoxygen.cmake
+++ b/docs/cmake/EnableDoxygen.cmake
@@ -8,8 +8,8 @@ function(EnableDoxygen outdir)
       return()
     endif()
 
-    set(src_basedir "${CMAKE_SOURCE_DIR}")
-    set(bin_basedir "${CMAKE_BINARY_DIR}")
+    set(src_input "${CMAKE_SOURCE_DIR}/model/src")
+    set(doc_output "${CMAKE_BINARY_DIR}/${outdir}")
     file(MAKE_DIRECTORY ${CMAKE_BINARY_DIR}/${outdir}/html)
     CONFIGURE_FILE(${CMAKE_SOURCE_DIR}/docs/Doxyfile.in
         ${CMAKE_BINARY_DIR}/${outdir}/Doxyfile @ONLY)