diff --git a/include/wine/wpp.h b/include/wine/wpp.h
index ac180bec9ff..0343099a700 100644
--- a/include/wine/wpp.h
+++ b/include/wine/wpp.h
@@ -24,30 +24,6 @@
 #include <stdio.h>
 #include <stdarg.h>
 
-struct wpp_callbacks
-{
-    /* I/O callbacks */
-
-    /* Looks for a file to include, returning the path where it is found */
-    /* The type param is true for local (#include "filename.h") includes */
-    /* parent_name is the directory of the parent source file, includepath
-     * is an array of additional include paths */
-    char *(*lookup)( const char *filename, int type, const char *parent_name,
-                     char **include_path, int include_path_count );
-    /* Opens an include file */
-    void *(*open)( const char *filename, int type );
-    /* Closes a previously opened file */
-    void (*close)( void *file );
-    /* Reads buffer from the input */
-    int (*read)( void *file, char *buffer, unsigned int len );
-    /* Writes buffer to the output */
-    void (*write)( const char *buffer, unsigned int len );
-
-    /* Error callbacks */
-    void (*error)( const char *file, int line, int col, const char *near, const char *msg, va_list ap );
-    void (*warning)( const char *file, int line, int col, const char *near, const char *msg, va_list ap );
-};
-
 /* Return value == 0 means successful execution */
 extern int wpp_add_define( const char *name, const char *value );
 extern void wpp_del_define( const char *name );
@@ -57,6 +33,5 @@ extern void wpp_set_pedantic( int on );
 extern int wpp_add_include_path( const char *path );
 extern char *wpp_find_include( const char *name, const char *parent_name );
 extern int wpp_parse( const char *input, FILE *output );
-extern void wpp_set_callbacks( const struct wpp_callbacks *callbacks );
 
 #endif  /* __WINE_WPP_H */
diff --git a/libs/wpp/ppl.l b/libs/wpp/ppl.l
index 0a3768ba6af..4fd12c6b172 100644
--- a/libs/wpp/ppl.l
+++ b/libs/wpp/ppl.l
@@ -306,7 +306,7 @@ includelogicentry_t *pp_includelogiclist = NULL;
 
 #define YY_INPUT(buf,result,max_size)					     \
 	{								     \
-		result = wpp_callbacks->read(pp_status.file, buf, max_size); \
+		result = fread(buf, 1, max_size, pp_status.file);	     \
 	}
 
 #define BUFFERINITIALCAPACITY 256
@@ -353,7 +353,7 @@ void pp_writestring(const char *format, ...)
 		va_end(valist);
 	}
 
-	wpp_callbacks->write(buffer, len);
+        fwrite(buffer, 1, len, ppy_out);
 }
 
 %}
@@ -1340,7 +1340,7 @@ static bufferstackentry_t *pop_buffer(void)
 
 		if(!bufferstack[bufferstackidx].should_pop)
 		{
-			wpp_callbacks->close(pp_status.file);
+			fclose(pp_status.file);
 			pp_writestring("# %d \"%s\" 2\n", bufferstack[bufferstackidx].line_number, bufferstack[bufferstackidx].filename);
 
 			/* We have EOF, check the include logic */
@@ -1561,7 +1561,7 @@ static void put_buffer(const char *s, int len)
 	if(top_macro())
 		add_text_to_macro(s, len);
 	else
-		wpp_callbacks->write(s, len);
+		fwrite(s, 1, len, ppy_out);
 }
 
 
diff --git a/libs/wpp/preproc.c b/libs/wpp/preproc.c
index 1bd10cd578c..df5adf0dbce 100644
--- a/libs/wpp/preproc.c
+++ b/libs/wpp/preproc.c
@@ -112,8 +112,8 @@ char *pp_xstrdup(const char *str)
 	return memcpy(s, str, len);
 }
 
-static char *wpp_default_lookup(const char *name, int type, const char *parent_name,
-                                char **include_path, int include_path_count)
+char *wpp_lookup(const char *name, int type, const char *parent_name,
+                 char **include_path, int include_path_count)
 {
     char *cpy;
     char *cptr;
@@ -190,22 +190,6 @@ static char *wpp_default_lookup(const char *name, int type, const char *parent_n
     return NULL;
 }
 
-static void *wpp_default_open(const char *filename, int type) {
-    return fopen(filename,"rt");
-}
-
-static void wpp_default_close(void *file) {
-    fclose(file);
-}
-
-static int wpp_default_read(void *file, char *buffer, unsigned int len){
-    return fread(buffer, 1, len, file);
-}
-
-static void wpp_default_write( const char *buffer, unsigned int len ) {
-    fwrite(buffer, 1, len, ppy_out);
-}
-
 /* Don't comment on the hash, it's primitive but functional... */
 static int pphash(const char *str)
 {
@@ -505,7 +489,7 @@ int wpp_add_include_path(const char *path)
 
 char *wpp_find_include(const char *name, const char *parent_name)
 {
-    return wpp_default_lookup(name, !!parent_name, parent_name, includepath, nincludepath);
+    return wpp_lookup(name, !!parent_name, parent_name, includepath, nincludepath);
 }
 
 void *pp_open_include(const char *name, int type, const char *parent_name, char **newpath)
@@ -513,9 +497,8 @@ void *pp_open_include(const char *name, int type, const char *parent_name, char
     char *path;
     void *fp;
 
-    if (!(path = wpp_callbacks->lookup(name, type, parent_name, includepath,
-                                       nincludepath))) return NULL;
-    fp = wpp_callbacks->open(path, type);
+    if (!(path = wpp_lookup(name, type, parent_name, includepath, nincludepath))) return NULL;
+    fp = fopen(path, "rt");
 
     if (fp)
     {
@@ -705,45 +688,20 @@ end:
 	fprintf(stderr, "\n");
 }
 
-static void wpp_default_error(const char *file, int line, int col, const char *near, const char *msg, va_list ap)
-{
-	generic_msg(msg, "Error", near, ap);
-	exit(1);
-}
-
-static void wpp_default_warning(const char *file, int line, int col, const char *near, const char *msg, va_list ap)
-{
-	generic_msg(msg, "Warning", near, ap);
-}
-
-static const struct wpp_callbacks default_callbacks =
-{
-	wpp_default_lookup,
-	wpp_default_open,
-	wpp_default_close,
-	wpp_default_read,
-	wpp_default_write,
-	wpp_default_error,
-	wpp_default_warning,
-};
-
-const struct wpp_callbacks *wpp_callbacks = &default_callbacks;
-
 int ppy_error(const char *s, ...)
 {
 	va_list ap;
 	va_start(ap, s);
-	wpp_callbacks->error(pp_status.input, pp_status.line_number, pp_status.char_number, ppy_text, s, ap);
+	generic_msg(s, "Error", ppy_text, ap);
 	va_end(ap);
-	pp_status.state = 1;
-	return 1;
+	exit(1);
 }
 
 int ppy_warning(const char *s, ...)
 {
 	va_list ap;
 	va_start(ap, s);
-	wpp_callbacks->warning(pp_status.input, pp_status.line_number, pp_status.char_number, ppy_text, s, ap);
+	generic_msg(s, "Warning", ppy_text, ap);
 	va_end(ap);
 	return 0;
 }
diff --git a/libs/wpp/wpp.c b/libs/wpp/wpp.c
index 60b2d388581..60d668128e8 100644
--- a/libs/wpp/wpp.c
+++ b/libs/wpp/wpp.c
@@ -197,7 +197,7 @@ int wpp_parse( const char *input, FILE *output )
     add_special_defines();
 
     if (!input) pp_status.file = stdin;
-    else if (!(pp_status.file = wpp_callbacks->open(input, 1)))
+    else if (!(pp_status.file = fopen(input, "rt")))
     {
         ppy_error("Could not open %s\n", input);
         del_special_defines();
@@ -217,7 +217,7 @@ int wpp_parse( const char *input, FILE *output )
 
     if (input)
     {
-	wpp_callbacks->close(pp_status.file);
+	fclose(pp_status.file);
 	free(pp_status.input);
     }
     /* Clean if_stack, it could remain dirty on errors */
@@ -227,9 +227,3 @@ int wpp_parse( const char *input, FILE *output )
     pp_pop_define_state();
     return ret;
 }
-
-
-void wpp_set_callbacks( const struct wpp_callbacks *callbacks )
-{
-    wpp_callbacks = callbacks;
-}
diff --git a/libs/wpp/wpp_private.h b/libs/wpp/wpp_private.h
index 093f2211249..ab4296bb4d5 100644
--- a/libs/wpp/wpp_private.h
+++ b/libs/wpp/wpp_private.h
@@ -190,6 +190,8 @@ void pp_next_if_state(int);
 pp_if_state_t pp_pop_if(void);
 pp_if_state_t pp_if_state(void);
 int pp_get_if_depth(void);
+char *wpp_lookup(const char *name, int type, const char *parent_name,
+                 char **include_path, int include_path_count);
 
 #ifndef __GNUC__
 #define __attribute__(x)  /*nothing*/