diff --git a/hl-vt100/src/lw_terminal_vt100.c b/hl-vt100/src/lw_terminal_vt100.c
index c8a182e..aea1240 100644
--- a/hl-vt100/src/lw_terminal_vt100.c
+++ b/hl-vt100/src/lw_terminal_vt100.c
@@ -967,8 +967,7 @@ static void HTS(struct lw_terminal *term_emul)
     vt100->tabulations[vt100->x] = '|';
 }
 
-static void vt100_write(struct lw_terminal *term_emul, char c)
-{
+static void vt100_write_unicode(struct lw_terminal *term_emul, int c) {
     struct lw_terminal_vt100 *vt100;
 
     vt100 = (struct lw_terminal_vt100 *)term_emul->user_data;
@@ -1022,6 +1021,47 @@ static void vt100_write(struct lw_terminal *term_emul, char c)
     vt100->x += 1;
 }
 
+#define REPLACEMENT ('?')
+
+static void vt100_write(struct lw_terminal *term_emul, char c) {
+    struct lw_terminal_vt100 *vt100;
+    uint8_t uc = c;
+
+    vt100 = (struct lw_terminal_vt100 *)term_emul->user_data;
+
+    if (vt100->ustate == 0) {
+        if (uc < 0x80) {
+            vt100_write_unicode(term_emul, uc);
+        } else if((uc & 0xe0) == 0xc0) {
+            vt100->ustate = 1;
+            vt100->ubits = (uc & 0x1f);
+        } else if((uc & 0xf0) == 0xe0) {
+            vt100->ustate = 2;
+            vt100->ubits = (uc & 0xf);
+        } else if((uc & 0xf8) == 0xf0) {
+            vt100->ustate = 3;
+            vt100->ubits = (uc & 0x7);
+        } else {
+            vt100_write_unicode(term_emul, REPLACEMENT);
+        }
+    } else {
+        if (uc < 0x80) {
+            vt100_write_unicode(term_emul, REPLACEMENT);
+            vt100_write_unicode(term_emul, uc);
+            vt100->ustate = 0;
+        } else if ((uc & 0xc0) != 0x80) {
+            vt100_write_unicode(term_emul, REPLACEMENT);
+            vt100->ustate = 0;
+        } else {
+            vt100->ubits <<= 6;
+            vt100->ubits |= uc & 0x3f;
+            if (--vt100->ustate == 0) {
+            vt100_write_unicode(term_emul, vt100->ubits);
+            }
+        }
+    }
+}
+
 const lw_cell_t *lw_terminal_vt100_getline(struct lw_terminal_vt100 *vt100, unsigned int y) {
     if (y < vt100->margin_top || y > vt100->margin_bottom)
         return vt100->afrozen_screen + FROZEN_SCREEN_PTR(vt100, 0, y);
diff --git a/hl-vt100/src/lw_terminal_vt100.h b/hl-vt100/src/lw_terminal_vt100.h
index f67d007..7204055 100644
--- a/hl-vt100/src/lw_terminal_vt100.h
+++ b/hl-vt100/src/lw_terminal_vt100.h
@@ -84,6 +84,7 @@ struct lw_parsed_attr {
 struct lw_terminal_vt100
 {
     struct lw_terminal *lw_terminal;
+    int ustate, ubits;
     unsigned int width;
     unsigned int height;
     unsigned int x;