diff --git a/doc/Doxyfile b/doc/Doxyfile
index 1c571f36..53d3bcd0 100644
--- a/doc/Doxyfile
+++ b/doc/Doxyfile
@@ -459,7 +459,7 @@ WARN_LOGFILE           =
 # directories like "/usr/src/myproject". Separate the files or directories 
 # with spaces.
 
-INPUT                  = ../server ../client ../testcases ../
+INPUT                  = ../common ../server ../client ../testcases ../
 
 # If the value of the INPUT tag contains directories, you can use the 
 # FILE_PATTERNS tag to specify one or more wildcard pattern (like *.cpp