diff --git a/docs/CMakeLists.txt b/docs/CMakeLists.txt
index 6c43e234..08a5df62 100644
--- a/docs/CMakeLists.txt
+++ b/docs/CMakeLists.txt
@@ -22,18 +22,23 @@ if(DOXYGEN_FOUND)
    set(DOXYGEN_RECURSIVE YES)
    set(DOXYGEN_EXCLUDE_PATTERNS
       "wut_structsize.h")
-   set(DOXYGEN_EXCLUDE_SYMBOLS
-      "WUT_CHECK_OFFSET"
-      "WUT_CHECK_SIZE"
-      "WUT_PADDING_BYTES"
-      "WUT_UNKNOWN_BYTES"
-      "WUT_UNKNOWN_SIZE")
    set(DOXYGEN_SOURCE_BROWSER YES)
    set(DOXYGEN_JAVADOC_AUTOBRIEF YES)
    set(DOXYGEN_ENUM_VALUES_PER_LINE 1)
    set(DOXYGEN_CLASS_DIAGRAMS NO)
    set(DOXYGEN_COLLABORATION_GRAPH NO)
-   set(DOXYGEN_PREDEFINED "__cplusplus")
+   set(DOXYGEN_ENABLE_PREPROCESSING YES)
+   set(DOXYGEN_MACRO_EXPANSION YES)
+   set(DOXYGEN_EXPAND_ONLY_PREDEF YES)
+   set(DOXYGEN_PREDEFINED
+      "__cplusplus;"
+      "WUT_PACKED=;"
+      "WUT_ALIGNAS(x)=;"
+      "WUT_CHECK_OFFSET(Type,Offset,Field)=;"
+      "WUT_CHECK_SIZE(Type,Size)=;"
+      "WUT_PADDING_BYTES(Size)=;"
+      "WUT_UNKNOWN_BYTES(Size)=;"
+      "WUT_UNKNOWN_SIZE(x)=;")
 
    doxygen_add_docs(docs
       "${CMAKE_CURRENT_SOURCE_DIR}/../include"