diff --git a/doxygen/Doxyfile.in b/doxygen/Doxyfile.in
index f45f7461592..28c73272dda 100644
--- a/doxygen/Doxyfile.in
+++ b/doxygen/Doxyfile.in
@@ -897,7 +897,15 @@ EXCLUDE_SYMLINKS       = NO
 # Note that the wildcards are matched against the file with absolute path, so to
 # exclude all test directories for example use the pattern */test/*
 
-EXCLUDE_PATTERNS       =
+EXCLUDE_PATTERNS       = */fortran/test/*
+EXCLUDE_PATTERNS      += */fortran/testpar/*
+EXCLUDE_PATTERNS      += */fortran/examples/*
+EXCLUDE_PATTERNS      += */fortran/src/*.c
+EXCLUDE_PATTERNS      += */fortran/src/*.h
+EXCLUDE_PATTERNS      += */hl/fortran/examples/*
+EXCLUDE_PATTERNS      += */hl/fortran/test/*
+EXCLUDE_PATTERNS      += */hl/fortran/src/*.c
+EXCLUDE_PATTERNS      += */hl/fortran/src/*.h
 
 # The EXCLUDE_SYMBOLS tag can be used to specify one or more symbol names
 # (namespaces, classes, functions, etc.) that should be excluded from the