diff --git a/doc/Doxyfile.in b/doc/Doxyfile.in
index 749949ace..82089313e 100644
--- a/doc/Doxyfile.in
+++ b/doc/Doxyfile.in
@@ -67,7 +67,7 @@ INCLUDED_BY_GRAPH = NO
 WARN_IF_UNDOCUMENTED   = @DOXYGEN_WARN_UNDOCUMENTED@
 EXTRACT_ALL            = @DOXYGEN_EXTRACT_ALL@
 HIDE_UNDOC_RELATIONS   = NO
-EXTRACT_STATIC         = @DOXYGEN_EXTRACT_ALL@
+EXTRACT_STATIC         = YES
 
 MACRO_EXPANSION        = YES