diff --git a/base/applications/cmdutils/taskkill/CMakeLists.txt b/base/applications/cmdutils/taskkill/CMakeLists.txt
index 4b5e3498c87..5006fb3b6f1 100644
--- a/base/applications/cmdutils/taskkill/CMakeLists.txt
+++ b/base/applications/cmdutils/taskkill/CMakeLists.txt
@@ -1,4 +1,5 @@
 
+add_definitions(-D__WINESRC__)
 add_executable(taskkill taskkill.c taskkill.rc)
 target_link_libraries(taskkill wine)
 set_module_type(taskkill win32cui UNICODE)
diff --git a/base/applications/cmdutils/taskkill/taskkill.c b/base/applications/cmdutils/taskkill/taskkill.c
index 6e4e1eb55ad..59ce98dc6dc 100644
--- a/base/applications/cmdutils/taskkill/taskkill.c
+++ b/base/applications/cmdutils/taskkill/taskkill.c
@@ -47,7 +47,7 @@ static int taskkill_vprintfW(const WCHAR *msg, __ms_va_list va_args)
     WCHAR msg_buffer[8192];
 
     wlen = FormatMessageW(FORMAT_MESSAGE_FROM_STRING, msg, 0, 0, msg_buffer,
-                          sizeof(msg_buffer)/sizeof(*msg_buffer), &va_args);
+                          ARRAY_SIZE(msg_buffer), &va_args);
 
     ret = WriteConsoleW(GetStdHandle(STD_OUTPUT_HANDLE), msg_buffer, wlen, &count, NULL);
     if (!ret)
@@ -92,8 +92,7 @@ static int WINAPIV taskkill_message_printfW(int msg, ...)
     WCHAR msg_buffer[8192];
     int len;
 
-    LoadStringW(GetModuleHandleW(NULL), msg, msg_buffer,
-        sizeof(msg_buffer)/sizeof(WCHAR));
+    LoadStringW(GetModuleHandleW(NULL), msg, msg_buffer, ARRAY_SIZE(msg_buffer));
 
     __ms_va_start(va_args, msg);
     len = taskkill_vprintfW(msg_buffer, va_args);
@@ -107,8 +106,7 @@ static int taskkill_message(int msg)
     static const WCHAR formatW[] = {'%','1',0};
     WCHAR msg_buffer[8192];
 
-    LoadStringW(GetModuleHandleW(NULL), msg, msg_buffer,
-        sizeof(msg_buffer)/sizeof(WCHAR));
+    LoadStringW(GetModuleHandleW(NULL), msg, msg_buffer, ARRAY_SIZE(msg_buffer));
 
     return taskkill_printfW(formatW, msg_buffer);
 }
diff --git a/media/doc/README.WINE b/media/doc/README.WINE
index 518cef18c22..d5c5983ad4a 100644
--- a/media/doc/README.WINE
+++ b/media/doc/README.WINE
@@ -229,7 +229,7 @@ ReactOS shares the following programs with Winehq.
 reactos/base/applications/cmdutils/cscript  # Synced to WineStaging-3.17
 reactos/base/applications/cmdutils/reg      # Synced to WineStaging-3.17
 reactos/base/applications/cmdutils/schtasks # Synced to WineStaging-3.3
-reactos/base/applications/cmdutils/taskkill # Synced to WineStaging-3.3
+reactos/base/applications/cmdutils/taskkill # Synced to WineStaging-3.17
 reactos/base/applications/cmdutils/wmic     # Synced to WineStaging-3.3
 reactos/base/applications/cmdutils/wscript  # Synced to WineStaging-3.17
 reactos/base/applications/cmdutils/xcopy    # Synced to WineStaging-3.3