diff --git a/include/stdio.h b/include/stdio.h
index 279160912ba9..e392bd5eb3e2 100644
--- a/include/stdio.h
+++ b/include/stdio.h
@@ -348,6 +348,7 @@ int	 feof_unlocked(FILE *);
 int	 ferror_unlocked(FILE *);
 int	 fflush_unlocked(FILE *);
 int	 fileno_unlocked(FILE *);
+int	 fputc_unlocked(int, FILE *);
 int	 fputs_unlocked(const char * __restrict, FILE * __restrict);
 size_t	 fread_unlocked(void * __restrict, size_t, size_t, FILE * __restrict);
 size_t	 fwrite_unlocked(const void * __restrict, size_t, size_t,
diff --git a/lib/libc/stdio/Symbol.map b/lib/libc/stdio/Symbol.map
index a17830d9cebf..4926b6f35729 100644
--- a/lib/libc/stdio/Symbol.map
+++ b/lib/libc/stdio/Symbol.map
@@ -173,6 +173,7 @@ FBSD_1.5 {
 
 FBSD_1.6 {
 	fflush_unlocked;
+	fputc_unlocked;
 	fputs_unlocked;
 	fread_unlocked;
 	fwrite_unlocked;
diff --git a/lib/libc/stdio/fputc.c b/lib/libc/stdio/fputc.c
index 7a48a93a0071..a2d2d14655bc 100644
--- a/lib/libc/stdio/fputc.c
+++ b/lib/libc/stdio/fputc.c
@@ -46,14 +46,22 @@ __FBSDID("$FreeBSD$");
 
 #undef fputc_unlocked
 
+int
+fputc_unlocked(int c, FILE *fp)
+{
+
+	/* Orientation set by __sputc() when buffer is full. */
+	/* ORIENT(fp, -1); */
+	return (__sputc(c, fp));
+}
+
 int
 fputc(int c, FILE *fp)
 {
 	int retval;
+
 	FLOCKFILE_CANCELSAFE(fp);
-	/* Orientation set by __sputc() when buffer is full. */
-	/* ORIENT(fp, -1); */
-	retval = __sputc(c, fp);
+	retval = fputc_unlocked(c, fp);
 	FUNLOCKFILE_CANCELSAFE();
 	return (retval);
 }