diff --git a/reactos/Doxyfile b/reactos/Doxyfile
index 386ca57fdf4..75a2bcb4f8f 100644
--- a/reactos/Doxyfile
+++ b/reactos/Doxyfile
@@ -196,7 +196,7 @@ ALIASES                =
 # For instance, some of the names that are used will be different. The list 
 # of all members will be omitted, etc.
 
-OPTIMIZE_OUTPUT_FOR_C  = YES
+OPTIMIZE_OUTPUT_FOR_C  = NO
 
 # Set the OPTIMIZE_OUTPUT_JAVA tag to YES if your project consists of Java 
 # sources only. Doxygen will then generate output that is more tailored for 
@@ -236,7 +236,7 @@ EXTENSION_MAPPING      =
 # func(std::string) {}). This also make the inheritance and collaboration 
 # diagrams that involve STL classes more complete and accurate.
 
-BUILTIN_STL_SUPPORT    = NO
+BUILTIN_STL_SUPPORT    = YES
 
 # If you use Microsoft's C++/CLI language, you should set this option to YES to 
 # enable parsing support.