diff --git a/tools/doxygen/Doxyfile b/tools/doxygen/Doxyfile
index 8073a8239..2c2bf5e4a 100644
--- a/tools/doxygen/Doxyfile
+++ b/tools/doxygen/Doxyfile
@@ -809,7 +809,8 @@ EXCLUDE_SYMLINKS       = NO
 
 EXCLUDE_PATTERNS       = */cpu/cc26xx-cc13xx/lib/* \
                          */cpu/cc26xx-cc13xx/rf-core/api/* \
-			 */platform/stm32nucleo-spirit1/stm32cube-lib/*
+                         */platform/stm32nucleo-spirit1/stm32cube-lib/* \
+                         */os/net/security/tinydtls/*
 
 # The EXCLUDE_SYMBOLS tag can be used to specify one or more symbol names
 # (namespaces, classes, functions, etc.) that should be excluded from the