diff --git a/libc/Makefile b/libc/Makefile
index 92904b5d..4585f10c 100644
--- a/libc/Makefile
+++ b/libc/Makefile
@@ -87,8 +87,6 @@ stdio/fgetc_unlocked.o \
stdio/fgets.o \
stdio/fgets_unlocked.o \
stdio/fileno_unlocked.o \
-stdio/flbf.o \
-stdio/flbf_unlocked.o \
stdio/flockfile.o \
stdio/fmemopen.o \
stdio/fnewfile.o \
diff --git a/libc/include/stdio.h b/libc/include/stdio.h
index bdc09e89..2fcd00fa 100644
--- a/libc/include/stdio.h
+++ b/libc/include/stdio.h
@@ -314,8 +314,6 @@ int fwriting_unlocked(FILE* fp);
int freadable_unlocked(FILE* fp);
#define fwritable __fwritable
int fwritable_unlocked(FILE* fp);
-#define flbf __flbf
-int flbf_unlocked(FILE* fp);
#define fpurge __fpurge
void fpurge_unlocked(FILE* fp);
#define fpending __fpending
diff --git a/libc/include/stdio_ext.h b/libc/include/stdio_ext.h
index c6fa81a8..97f88c67 100644
--- a/libc/include/stdio_ext.h
+++ b/libc/include/stdio_ext.h
@@ -36,7 +36,6 @@ int __freading(FILE* fp);
int __fwriting(FILE* fp);
int __freadable(FILE* fp);
int __fwritable(FILE* fp);
-int __flbf(FILE* fp);
void __fpurge(FILE* fp);
size_t __fpending(FILE* fp);
diff --git a/libc/stdio/flbf.cpp b/libc/stdio/flbf.cpp
deleted file mode 100644
index ca828278..00000000
--- a/libc/stdio/flbf.cpp
+++ /dev/null
@@ -1,33 +0,0 @@
-/*******************************************************************************
-
- Copyright(C) Jonas 'Sortie' Termansen 2011, 2012, 2013.
-
- This file is part of the Sortix C Library.
-
- The Sortix C Library is free software: you can redistribute it and/or modify
- it under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation, either version 3 of the License, or (at your
- option) any later version.
-
- The Sortix C Library is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
- License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with the Sortix C Library. If not, see .
-
- stdio/flbf.cpp
- Returns whether a FILE is line buffered.
-
-*******************************************************************************/
-
-#include
-
-extern "C" int flbf(FILE* fp)
-{
- flockfile(fp);
- int ret = flbf_unlocked(fp);
- funlockfile(fp);
- return ret;
-}
diff --git a/libc/stdio/flbf_unlocked.cpp b/libc/stdio/flbf_unlocked.cpp
deleted file mode 100644
index 5f984a08..00000000
--- a/libc/stdio/flbf_unlocked.cpp
+++ /dev/null
@@ -1,30 +0,0 @@
-/*******************************************************************************
-
- Copyright(C) Jonas 'Sortie' Termansen 2011, 2012, 2013.
-
- This file is part of the Sortix C Library.
-
- The Sortix C Library is free software: you can redistribute it and/or modify
- it under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation, either version 3 of the License, or (at your
- option) any later version.
-
- The Sortix C Library is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
- License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with the Sortix C Library. If not, see .
-
- stdio/flbf_unlocked.cpp
- Returns whether a FILE is line buffered.
-
-*******************************************************************************/
-
-#include
-
-extern "C" int flbf_unlocked(FILE* fp)
-{
- return fp->buffer_mode == _IOLBF;
-}