diff --git a/doc/doxygen/riot.doxyfile b/doc/doxygen/riot.doxyfile
index f0a46be7b1d7fe11fc6c6ae7a9d55e9071050db0..0611658046e05a750204adcb27db0a40e80c8e9d 100644
--- a/doc/doxygen/riot.doxyfile
+++ b/doc/doxygen/riot.doxyfile
@@ -87,7 +87,7 @@ WARN_LOGFILE           =
 #---------------------------------------------------------------------------
 INPUT                  = ../../core ../../cpu ../../boards ../../sys src/ ../../drivers
 INPUT_ENCODING         = UTF-8
-FILE_PATTERNS          = *.txt *.c *.h
+FILE_PATTERNS          = *.txt *.h
 RECURSIVE              = YES
 EXCLUDE                =
 EXCLUDE_SYMLINKS       = NO