diff --git a/lib/hcl.h b/lib/hcl.h
index 9491b80..9ae0ae8 100644
--- a/lib/hcl.h
+++ b/lib/hcl.h
@@ -1589,10 +1589,10 @@ HCL_EXPORT hcl_ooi_t hcl_logbfmt (
 	...
 );
 
-HCL_EXPORT hcl_ooi_t hcl_logoofmt (
-	hcl_t*            hcl,
-	hcl_oow_t         mask,
-	const hcl_ooch_t* fmt,
+HCL_EXPORT hcl_ooi_t hcl_logufmt (
+	hcl_t*           hcl,
+	hcl_oow_t        mask,
+	const hcl_uch_t* fmt,
 	...
 );
 
@@ -1796,10 +1796,10 @@ HCL_EXPORT int hcl_equalobjs (
 #	define hcl_convootobcstr(hcl,oocs,oocslen,bcs,bcslen) hcl_convutobcstr(hcl,oocs,oocslen,bcs,bcslen)
 #	define hcl_convbtooocstr(hcl,bcs,bcslen,oocs,oocslen) hcl_convbtoucstr(hcl,bcs,bcslen,oocs,oocslen)
 #else
-#	define hcl_convootouchars(hcl,oocs,oocslen,bcs,bcslen) hcl_convbtouchars(hcl,oocs,oocslen,bcs,bcslen)
-#	define hcl_convutooochars(hcl,bcs,bcslen,oocs,oocslen) hcl_convutobchars(hcl,bcs,bcslen,oocs,oocslen)
-#	define hcl_convootoucstr(hcl,oocs,oocslen,bcs,bcslen) hcl_convbtoucstr(hcl,oocs,oocslen,bcs,bcslen)
-#	define hcl_convutooocstr(hcl,bcs,bcslen,oocs,oocslen) hcl_convutobcstr(hcl,bcs,bcslen,oocs,oocslen)
+#	define hcl_convootouchars(hcl,oocs,oocslen,ucs,ucslen) hcl_convbtouchars(hcl,oocs,oocslen,ucs,ucslen)
+#	define hcl_convutooochars(hcl,ucs,ucslen,oocs,oocslen) hcl_convutobchars(hcl,ucs,ucslen,oocs,oocslen)
+#	define hcl_convootoucstr(hcl,oocs,oocslen,ucs,ucslen) hcl_convbtoucstr(hcl,oocs,oocslen,ucs,ucslen)
+#	define hcl_convutooocstr(hcl,ucs,ucslen,oocs,oocslen) hcl_convutobcstr(hcl,ucs,ucslen,oocs,oocslen)
 #endif
 
 HCL_EXPORT int hcl_convbtouchars (
diff --git a/lib/logfmtv.h b/lib/logfmtv.h
index 6f36dd1..1126b9b 100644
--- a/lib/logfmtv.h
+++ b/lib/logfmtv.h
@@ -100,6 +100,7 @@ static int logfmtv (hcl_t* hcl, const fmtchar_t* fmt, hcl_fmtout_t* data, va_lis
 	int n, base, neg, sign;
 	hcl_ooi_t tmp, width, precision;
 	hcl_ooch_t ch, padc;
+	fmtchar_t fch;
 	int lm_flag, lm_dflag, flagc, numlen;
 	hcl_uintmax_t num = 0;
 	int stop = 0;
@@ -137,23 +138,29 @@ static int logfmtv (hcl_t* hcl, const fmtchar_t* fmt, hcl_fmtout_t* data, va_lis
 		}
 		PUT_OOCS (checkpoint, fmt - checkpoint - 1);
 	#else
-		while ((ch = *fmt++) != '%' || stop) 
+		while ((fch = *fmt++) != '%' || stop) 
 		{
-			if (ch == '\0') goto done;
-
-	#if defined(HCL_OOCH_IS_UCH)
-		/* ooch is uch. fmtchar is bch */
-		/* TODO: convert bch to uch */
-	#else
-		/* ooch is bch. fmtchar is uch */
-		/* TODO: convert uch to bch */
-	#endif
+		#if defined(HCL_OOCH_IS_UCH)
+			if (fch == '\0') goto done;
+			/* ooch is uch. fmtchar is bch */
+			/* TODO: convert bch to uch */
 			PUT_OOCH (ch, 1);
+		#else
+			hcl_bch_t bcsbuf[HCL_MBLEN_MAX + 1];
+			hcl_oow_t ucslen, bcslen;
+
+			if (fch == '\0') goto done;
+
+			/* ooch is bch. fmtchar is uch */
+			ucslen = 1;
+			bcslen = 1;
+			if (hcl_convutooochars (hcl, &fch, &ucslen, bcsbuf, &bcslen) <= -1) goto oops;
+			PUT_OOCS (bcsbuf, bcslen);
+		#endif
 		}
 	#endif
 		percent = fmt - 1;
 
-
 		padc = ' '; 
 		width = 0; precision = 0;
 		neg = 0; sign = 0;