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 <http://www.gnu.org/licenses/>.
-
-    stdio/flbf.cpp
-    Returns whether a FILE is line buffered.
-
-*******************************************************************************/
-
-#include <stdio.h>
-
-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 <http://www.gnu.org/licenses/>.
-
-    stdio/flbf_unlocked.cpp
-    Returns whether a FILE is line buffered.
-
-*******************************************************************************/
-
-#include <stdio.h>
-
-extern "C" int flbf_unlocked(FILE* fp)
-{
-	return fp->buffer_mode == _IOLBF;
-}