diff --git a/newlib/libc/stdlib/mbctype.h b/newlib/libc/stdlib/mbctype.h
index 6abcf3db0..65cf24c34 100644
--- a/newlib/libc/stdlib/mbctype.h
+++ b/newlib/libc/stdlib/mbctype.h
@@ -14,7 +14,8 @@ int _EXFUN(_isjis, (int c));
 
 #define _issjis1(c)    (((c) >= 0x81 && (c) <= 0x9f) || ((c) >= 0xe0 && (c) <= 0xef))
 #define _issjis2(c)    (((c) >= 0x40 && (c) <= 0x7e) || ((c) >= 0x80 && (c) <= 0xfc))
-#define _iseucjp(c)    ((c) >= 0xa1 && (c) <= 0xfe)
+#define _iseucjp1(c)   ((c) == 0x8e || (c) == 0x8f || ((c) >= 0xa1 && (c) <= 0xfe))
+#define _iseucjp2(c)   ((c) >= 0xa1 && (c) <= 0xfe)
 #define _isjis(c)      ((c) >= 0x21 && (c) <= 0x7e)
 
 #endif /* _MBCTYPE_H_ */
diff --git a/newlib/libc/stdlib/mbtowc_r.c b/newlib/libc/stdlib/mbtowc_r.c
index 78bde4b78..010ce1da5 100644
--- a/newlib/libc/stdlib/mbtowc_r.c
+++ b/newlib/libc/stdlib/mbtowc_r.c
@@ -470,7 +470,7 @@ _DEFUN (__eucjp_mbtowc, (r, pwc, s, n, charset, state),
   ch = t[i++];
   if (state->__count == 0)
     {
-      if (_iseucjp (ch))
+      if (_iseucjp1 (ch))
 	{
 	  state->__value.__wchb[0] = ch;
 	  state->__count = 1;
@@ -481,9 +481,35 @@ _DEFUN (__eucjp_mbtowc, (r, pwc, s, n, charset, state),
     }
   if (state->__count == 1)
     {
-      if (_iseucjp (ch))
+      if (_iseucjp2 (ch))
 	{
-	  *pwc = (((wchar_t)state->__value.__wchb[0]) << 8) + (wchar_t)ch;
+	  if (state->__value.__wchb[0] == 0x8f)
+	    {
+	      state->__value.__wchb[1] = ch;
+	      state->__count = 2;
+	      if (n <= i)
+		return -2;
+	      ch = t[i++];
+	    }
+	  else
+	    {
+	      *pwc = (((wchar_t)state->__value.__wchb[0]) << 8) + (wchar_t)ch;
+	      state->__count = 0;
+	      return i;
+	    }
+	}
+      else
+	{
+	  r->_errno = EILSEQ;
+	  return -1;
+	}
+    }
+  if (state->__count == 2)
+    {
+      if (_iseucjp2 (ch))
+	{
+	  *pwc = (((wchar_t)state->__value.__wchb[1]) << 8)
+		 + (wchar_t)(ch & 0x7f);
 	  state->__count = 0;
 	  return i;
 	}
diff --git a/newlib/libc/stdlib/wctomb_r.c b/newlib/libc/stdlib/wctomb_r.c
index 64210f232..95a04069c 100644
--- a/newlib/libc/stdlib/wctomb_r.c
+++ b/newlib/libc/stdlib/wctomb_r.c
@@ -195,12 +195,19 @@ _DEFUN (__eucjp_wctomb, (r, s, wchar, charset, state),
   if (char1 != 0x00)
     {
     /* first byte is non-zero..validate multi-byte char */
-      if (_iseucjp (char1) && _iseucjp (char2)) 
+      if (_iseucjp1 (char1) && _iseucjp2 (char2)) 
 	{
 	  *s++ = (char)char1;
 	  *s = (char)char2;
 	  return 2;
 	}
+      else if (_iseucjp2 (char1) && _iseucjp2 (char2 | 0x80))
+	{
+	  *s++ = (char)0x8f;
+	  *s++ = (char)char1;
+	  *s = (char)(char2 | 0x80);
+	  return 3;
+	}
       else
 	{
 	  r->_errno = EILSEQ;