diff --git a/dll/win32/gdiplus/CMakeLists.txt b/dll/win32/gdiplus/CMakeLists.txt
index bb3e309e146..835f2702f5a 100644
--- a/dll/win32/gdiplus/CMakeLists.txt
+++ b/dll/win32/gdiplus/CMakeLists.txt
@@ -1,8 +1,8 @@
 
 add_definitions(
     -D__WINESRC__
-    -D__ROS_LONG64__
     -D_USE_MATH_DEFINES)
+remove_definitions(-D__ROS_LONG64__)
 
 include_directories(${REACTOS_SOURCE_DIR}/sdk/include/reactos/wine)
 spec2def(gdiplus.dll gdiplus.spec ADD_IMPORTLIB)
diff --git a/modules/rostests/winetests/gdiplus/CMakeLists.txt b/modules/rostests/winetests/gdiplus/CMakeLists.txt
index e0fc7fcb6bd..38c8474444f 100644
--- a/modules/rostests/winetests/gdiplus/CMakeLists.txt
+++ b/modules/rostests/winetests/gdiplus/CMakeLists.txt
@@ -1,5 +1,6 @@
 
 add_definitions(-DUSE_WINE_TODOS)
+remove_definitions(-D__ROS_LONG64__)
 
 list(APPEND SOURCE
     brush.c