diff --git a/common/gsm-encoding.c b/common/gsm-encoding.c
index cf01c72..0dea7b7 100644
--- a/common/gsm-encoding.c
+++ b/common/gsm-encoding.c
@@ -866,11 +866,13 @@ int char_uni_alphabet_decode(wchar_t value, unsigned char *dest, MBSTATE *mbs)
 {
 	int length;
 
-    switch (length = char_wctomb(dest, value, mbs)) {
+	switch (length = char_wctomb(dest, value, mbs)) {
 	case -1:
 		*dest = '?';
 		length = 1;
+		dprintf("err\n");
 	default:
+		dprintf("length: %d\n", length);
 		return length;
 	}
 }
@@ -968,12 +970,15 @@ unsigned int char_unicode_decode(unsigned char* dest, const unsigned char* src,
 	MBSTATE mbs;
 
 	MBSTATE_DEC_CLEAR(mbs);
+	dprintf("char_unicode_decode\n");
+	dprintf("length: %d\n", len);
 	for (i = 0; i < len / 2; i++) {
 		wchar_t wc = src[i * 2] << 8 | src[(i * 2) + 1];
 		length = char_uni_alphabet_decode(wc, dest, &mbs);
 		dest += length;
 		pos += length;
 	}
+	dprintf("iters: %d, chars: %d\n", i, pos);
 	*dest = 0;
 	return pos;
 }