diff --git a/mount.c b/mount.c
index 2353a8ac2..cddccadb4 100644
--- a/mount.c
+++ b/mount.c
@@ -83,7 +83,11 @@ extern int mount (__const char *__special_file, __const char *__dir,
 			__const void *__data);
 extern int umount (__const char *__special_file);
 extern int umount2 (__const char *__special_file, int __flags);
-static _syscall3(int, sysfs, int, option, unsigned int, fs_index, char *, buf);
+
+#include <sys/syscall.h>
+#include <linux/unistd.h>
+static int sysfs( int option, unsigned int fs_index, char * buf);
+_syscall3(int, sysfs, int, option, unsigned int, fs_index, char *, buf);
 
 
 extern const char mtab_file[];	/* Defined in utility.c */
diff --git a/util-linux/mount.c b/util-linux/mount.c
index 2353a8ac2..cddccadb4 100644
--- a/util-linux/mount.c
+++ b/util-linux/mount.c
@@ -83,7 +83,11 @@ extern int mount (__const char *__special_file, __const char *__dir,
 			__const void *__data);
 extern int umount (__const char *__special_file);
 extern int umount2 (__const char *__special_file, int __flags);
-static _syscall3(int, sysfs, int, option, unsigned int, fs_index, char *, buf);
+
+#include <sys/syscall.h>
+#include <linux/unistd.h>
+static int sysfs( int option, unsigned int fs_index, char * buf);
+_syscall3(int, sysfs, int, option, unsigned int, fs_index, char *, buf);
 
 
 extern const char mtab_file[];	/* Defined in utility.c */