diff --git a/tools/winedump/dos.c b/tools/winedump/dos.c
index 8424f790e92..2ec38b71be4 100644
--- a/tools/winedump/dos.c
+++ b/tools/winedump/dos.c
@@ -39,8 +39,6 @@
 #endif
 #include <fcntl.h>
 
-#define NONAMELESSUNION
-#define NONAMELESSSTRUCT
 #include "windef.h"
 #include "winbase.h"
 #include "winedump.h"
diff --git a/tools/winedump/dump.c b/tools/winedump/dump.c
index 7ca4dc0c366..e84e473ea75 100644
--- a/tools/winedump/dump.c
+++ b/tools/winedump/dump.c
@@ -39,8 +39,6 @@
 #endif
 #include <fcntl.h>
 
-#define NONAMELESSUNION
-#define NONAMELESSSTRUCT
 #include "windef.h"
 #include "winbase.h"
 #include "winedump.h"
diff --git a/tools/winedump/font.c b/tools/winedump/font.c
index 76710b80397..3257fce9d80 100644
--- a/tools/winedump/font.c
+++ b/tools/winedump/font.c
@@ -35,8 +35,6 @@
 #endif
 #include <fcntl.h>
 
-#define NONAMELESSUNION
-#define NONAMELESSSTRUCT
 #include "windef.h"
 #include "winbase.h"
 #include "winnt.h"
diff --git a/tools/winedump/lib.c b/tools/winedump/lib.c
index 6c926d43de2..f593515d683 100644
--- a/tools/winedump/lib.c
+++ b/tools/winedump/lib.c
@@ -36,7 +36,7 @@
 #include <fcntl.h>
 
 #define NONAMELESSUNION
-#define NONAMELESSSTRUCT
+
 #include "windef.h"
 #include "winbase.h"
 #include "winnt.h"
diff --git a/tools/winedump/msc.c b/tools/winedump/msc.c
index bb7a981b917..5890b2926bc 100644
--- a/tools/winedump/msc.c
+++ b/tools/winedump/msc.c
@@ -39,8 +39,6 @@
 #endif
 #include <fcntl.h>
 
-#define NONAMELESSUNION
-#define NONAMELESSSTRUCT
 #include "windef.h"
 #include "winbase.h"
 #include "winedump.h"
diff --git a/tools/winedump/pdb.c b/tools/winedump/pdb.c
index 1b713b1ed32..6a6a9b4682a 100644
--- a/tools/winedump/pdb.c
+++ b/tools/winedump/pdb.c
@@ -40,7 +40,7 @@
 #include <fcntl.h>
 
 #define NONAMELESSUNION
-#define NONAMELESSSTRUCT
+
 #include "windef.h"
 #include "winbase.h"
 #include "winedump.h"
diff --git a/tools/winedump/winedump.h b/tools/winedump/winedump.h
index 88fa0e78230..339cee32f09 100644
--- a/tools/winedump/winedump.h
+++ b/tools/winedump/winedump.h
@@ -42,8 +42,6 @@
 #include <assert.h>
 #include <stdarg.h>
 
-#define NONAMELESSUNION
-#define NONAMELESSSTRUCT
 #include "windef.h"
 #include "winbase.h"