diff --git a/Doxyfile b/Doxyfile
index d17330a..2dbd0bb 100644
--- a/Doxyfile
+++ b/Doxyfile
@@ -252,7 +252,7 @@ TCL_SUBST              =
 # members will be omitted, etc.
 # The default value is: NO.
 
-OPTIMIZE_OUTPUT_FOR_C  = NO
+OPTIMIZE_OUTPUT_FOR_C  = YES
 
 # Set the OPTIMIZE_OUTPUT_JAVA tag to YES if your project consists of Java or
 # Python sources only. Doxygen will then generate output that is more tailored
@@ -790,7 +790,7 @@ WARN_LOGFILE           =
 # spaces. See also FILE_PATTERNS and EXTENSION_MAPPING
 # Note: If this tag is empty the current directory is searched.
 
-INPUT                  = include/ \
+INPUT                  = include/neocomm.h \
                          README.md \
                          CONTRIBUTING.md \
                          LICENSE.md
@@ -818,7 +818,7 @@ INPUT_ENCODING         = UTF-8
 # *.m, *.markdown, *.md, *.mm, *.dox, *.py, *.pyw, *.f90, *.f95, *.f03, *.f08,
 # *.f, *.for, *.tcl, *.vhd, *.vhdl, *.ucf and *.qsf.
 
-FILE_PATTERNS          = *.hpp \
+FILE_PATTERNS          = *.h \
                          *.md
 
 # The RECURSIVE tag can be used to specify whether or not subdirectories should