diff --git a/base/shell/cmd/CMakeLists.txt b/base/shell/cmd/CMakeLists.txt
index 7bf64b58acd..471ecd0dfe1 100644
--- a/base/shell/cmd/CMakeLists.txt
+++ b/base/shell/cmd/CMakeLists.txt
@@ -1,7 +1,5 @@
 
-add_definitions(
-    -DANONYMOUSUNIONS
-    -D_DEBUG_MEM)
+add_definitions(-D_DEBUG_MEM)
 
 include_directories(${REACTOS_SOURCE_DIR}/sdk/include/reactos/wine)
 include_directories(${REACTOS_SOURCE_DIR}/sdk/lib/conutils)