diff --git a/headers/compatibility/bsd/stdio.h b/headers/compatibility/bsd/stdio.h
index 9f5f690095..dedf8e6c17 100644
--- a/headers/compatibility/bsd/stdio.h
+++ b/headers/compatibility/bsd/stdio.h
@@ -6,11 +6,11 @@
 #define _BSD_STDIO_H_
 
 
-#include_next <stdio.h>
 #include <features.h>
+#include_next <stdio.h>
 
 
-#if defined(_DEFAULT_SOURCE) || defined(_GNU_SOURCE)
+#ifdef _DEFAULT_SOURCE
 
 
 #ifdef __cplusplus
@@ -19,10 +19,6 @@ extern "C" {
 
 char *fgetln(FILE *stream, size_t *_length);
 
-int asprintf(char **ret, char const *format, ...) _PRINTFLIKE(2,3);
-int vasprintf(char **ret, char const *format, va_list ap);
-
-
 #ifdef __cplusplus
 }
 #endif
diff --git a/headers/posix/stdio.h b/headers/posix/stdio.h
index bde8ab4645..73a74a8768 100644
--- a/headers/posix/stdio.h
+++ b/headers/posix/stdio.h
@@ -169,6 +169,7 @@ extern ssize_t	getdelim(char **_line, size_t *_length, int delimiter,
 extern ssize_t	getline(char **_line, size_t *_length, FILE *stream);
 
 /* formatted I/O */
+extern int		asprintf(char **ret, char const *format, ...) _PRINTFLIKE(2,3);
 extern int		printf(char const *format, ...) _PRINTFLIKE(1,2);
 #if !defined(_KERNEL_MODE) && !defined(_BOOT_MODE) && !defined(_LOADER_MODE)
 extern int		dprintf(int fd, char const *format, ...) _PRINTFLIKE(2,3);
@@ -176,6 +177,7 @@ extern int		dprintf(int fd, char const *format, ...) _PRINTFLIKE(2,3);
 extern int		fprintf(FILE *stream, char const *format, ...) _PRINTFLIKE(2,3);
 extern int		sprintf(char *string, char const *format, ...) _PRINTFLIKE(2,3);
 extern int		snprintf(char *string, size_t size, char const *format, ...) _PRINTFLIKE(3,4);
+extern int		vasprintf(char **ret, char const *format, va_list ap);
 extern int		vprintf(char const *format, va_list ap);
 extern int		vfprintf(FILE *stream, char const *format, va_list ap);
 extern int		vsprintf(char *string, char const *format, va_list ap);