diff --git a/mlibc/include/stdio.h b/mlibc/include/stdio.h
index e3ff2cf5..79db7d93 100644
--- a/mlibc/include/stdio.h
+++ b/mlibc/include/stdio.h
@@ -53,6 +53,7 @@ int fdputs (char const* s, int fd);
 #undef putc
 #endif
 
+int eputc (int c);
 int eputs (char const* s);
 int fdputc (int c, int fd);
 int getchar ();
@@ -94,6 +95,7 @@ typedef int FILE;
 typedef unsigned long size_t;
 #endif
 
+int eputc (int c);
 int eputs (char const* s);
 int fclose (FILE *stream);
 FILE *fdopen (int fd, char const *mode);
diff --git a/mlibc/libc-gcc.c b/mlibc/libc-gcc.c
index 82e080d8..01745f8d 100644
--- a/mlibc/libc-gcc.c
+++ b/mlibc/libc-gcc.c
@@ -461,6 +461,12 @@ fdputs (char const* s, int fd)
   return 0;
 }
 
+int
+eputc (int c)
+{
+  return fdputc (c, STDERR);
+}
+
 int
 eputs (char const* s)
 {
diff --git a/mlibc/libc-mes.c b/mlibc/libc-mes.c
index c8abba5f..154d1f4b 100644
--- a/mlibc/libc-mes.c
+++ b/mlibc/libc-mes.c
@@ -139,6 +139,12 @@ strlen (char const* s)
   return i;
 }
 
+int
+eputc (int c)
+{
+  return fputc (c, 2);
+}
+
 int
 eputs (char const* s)
 {