diff --git a/tools/widl/server.c b/tools/widl/server.c
index a52c7297c35..c9156626963 100644
--- a/tools/widl/server.c
+++ b/tools/widl/server.c
@@ -37,7 +37,6 @@
 #include "header.h"
 #include "windef.h"
 
-#include "widl.h"
 #include "typelib.h"
 #include "typelib_struct.h"
 #include "typegen.h"
diff --git a/tools/widl/typegen.c b/tools/widl/typegen.c
index bb75a0a62a6..1078ede0dc4 100644
--- a/tools/widl/typegen.c
+++ b/tools/widl/typegen.c
@@ -40,7 +40,6 @@
 #include "windef.h"
 #include "wine/list.h"
 
-#include "widl.h"
 #include "typegen.h"
 
 static const func_t *current_func;
diff --git a/tools/widl/utils.c b/tools/widl/utils.c
index 7dafc10635d..e77361ce339 100644
--- a/tools/widl/utils.c
+++ b/tools/widl/utils.c
@@ -27,7 +27,6 @@
 #include <stdlib.h>
 #include <stdarg.h>
 #include <string.h>
-#include <assert.h>
 #include <ctype.h>
 
 #include "widl.h"
diff --git a/tools/wrc/utils.c b/tools/wrc/utils.c
index b0109a7f145..35811bb06ee 100644
--- a/tools/wrc/utils.c
+++ b/tools/wrc/utils.c
@@ -26,7 +26,6 @@
 #include <stdlib.h>
 #include <stdarg.h>
 #include <string.h>
-#include <assert.h>
 #include <ctype.h>
 
 #include "wine/unicode.h"