diff --git a/doc/doxyfile.in b/doc/doxyfile.in
index 2f111c9b3..3cb4116e7 100644
--- a/doc/doxyfile.in
+++ b/doc/doxyfile.in
@@ -541,7 +541,7 @@ TIMESTAMP              = NO
 # normally produced when WARNINGS is set to YES.
 # The default value is: NO.
 
-EXTRACT_ALL            = NO
+EXTRACT_ALL            = YES
 
 # If the EXTRACT_PRIVATE tag is set to YES, all private members of a class will
 # be included in the documentation.