diff --git a/doxygen/Doxyconfig b/doxygen/Doxyconfig
index a3ff72a..6ca483c 100644
--- a/doxygen/Doxyconfig
+++ b/doxygen/Doxyconfig
@@ -234,7 +234,7 @@ SEPARATE_MEMBER_PAGES  = NO
 # uses this value to replace tabs by spaces in code fragments.
 # Minimum value: 1, maximum value: 16, default value: 4.
 
-TAB_SIZE               = 4
+TAB_SIZE               = 8
 
 # This tag can be used to specify a number of aliases that act as commands in
 # the documentation. An alias has the form: