diff --git a/Source/charon/documentation.DoxyFile b/Source/charon/documentation.DoxyFile
index 79cad2b64..2468a1faf 100644
--- a/Source/charon/documentation.DoxyFile
+++ b/Source/charon/documentation.DoxyFile
@@ -136,11 +136,11 @@ WARN_LOGFILE =
 
 INPUT = ./
 
-FILE_PATTERNS = 
+FILE_PATTERNS = *.c *.h
 
 RECURSIVE = YES
 
-EXCLUDE = 
+EXCLUDE = tests
 
 EXCLUDE_SYMLINKS = NO