diff --git a/reactos/cmake/msvc.cmake b/reactos/cmake/msvc.cmake
index bee01acfc80..23b32bb3475 100644
--- a/reactos/cmake/msvc.cmake
+++ b/reactos/cmake/msvc.cmake
@@ -51,6 +51,10 @@ add_compile_flags("/wd4290")
 # - C4700: uninitialized variable usage
 add_compile_flags("/we4022 /we4047 /we4098 /we4113 /we4129 /we4229 /we4700")
 
+# Enable warnings above the default level, but don't treat them as errors:
+# - C4115: named type definition in parentheses
+add_compile_flags("/w14115")
+
 # Debugging
 #if(${CMAKE_BUILD_TYPE} STREQUAL "Debug")
 if(CMAKE_BUILD_TYPE STREQUAL "Debug")
diff --git a/reactos/dll/win32/riched20/msvc.h b/reactos/dll/win32/riched20/msvc.h
index 251a7cea54d..0e44d43f48a 100644
--- a/reactos/dll/win32/riched20/msvc.h
+++ b/reactos/dll/win32/riched20/msvc.h
@@ -4,13 +4,18 @@
 
 #define typeof(X_) __typeof_ ## X_
 
-struct ITextHost;
-struct _RECT;
-struct _CHARFORMATW;
-struct _PARAFORMAT;
-struct _POINT;
-struct _SIZEL;
 struct HDC__;
+struct ITextHost;
+struct tagRECT;
+struct _RECTL;
+struct _charformatw;
+struct _paraformat;
+struct tagPOINT;
+enum _TXTBACKSTYLE;
+struct tagSIZE;
+struct ITextServices;
+struct tagDVTARGETDEVICE;
+struct IDropTarget;
 
 #define WINAPI __stdcall
 #define HRESULT int
diff --git a/reactos/dll/win32/windowscodecs/typeof.h b/reactos/dll/win32/windowscodecs/typeof.h
index f7c68b18273..34ffcd1bb63 100644
--- a/reactos/dll/win32/windowscodecs/typeof.h
+++ b/reactos/dll/win32/windowscodecs/typeof.h
@@ -16,6 +16,12 @@
 #define __typeof_wchar unsigned short
 #endif
 
+struct jpeg_decompress_struct;
+struct jpeg_compress_struct;
+struct png_struct_def;
+struct png_color_struct;
+struct png_color_16_struct;
+
 typedef struct jpeg_error_mgr * (__cdecl typeof(jpeg_std_error))(struct jpeg_error_mgr *);
 typedef void (__cdecl typeof(jpeg_CreateDecompress))(struct jpeg_decompress_struct *, int, __typeof_size);
 typedef int (__cdecl typeof(jpeg_read_header))(struct jpeg_decompress_struct *, int);