diff --git a/src/main.rs b/src/main.rs
index 0651975..37e60ba 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -233,21 +233,25 @@ impl FramebufferWriter {
             }
         }
 
+        fbuf.update_screen();
+
         let cursor_glyph = glyphs.last().unwrap();
 
         self.cursor_top = cursor_glyph.y as usize - first_line_top_offset + self.next_line_y;
         self.cursor_bot = cursor_glyph.y as usize - first_line_top_offset + self.next_line_y + cursor_glyph.height;
 
         let last_line = self.layout.lines().unwrap().last().unwrap();
-        fbuf.update_screen();
-
-        let first_char_offset = glyphs[last_line.glyph_start].byte_offset;
-        let last_char_offset = glyphs[last_line.glyph_end -1].byte_offset;
-        let mut last_char_end = last_char_offset + 1;
-        while last_char_end < self.out_string.len() && !self.out_string.is_char_boundary(last_char_end) {
-            last_char_end += 1;
-        }
-        let log_line_slice = &self.out_string[first_char_offset..last_char_end];
+        let log_line_slice = if last_line.glyph_start == last_line.glyph_end {
+           ""
+        } else {
+            let first_char_offset = glyphs[last_line.glyph_start].byte_offset;
+            let last_char_offset = glyphs[last_line.glyph_end-1].byte_offset;
+            let mut last_char_end = last_char_offset + 1;
+            while last_char_end < self.out_string.len() && !self.out_string.is_char_boundary(last_char_end) {
+                last_char_end += 1;
+            }
+            &self.out_string[first_char_offset..last_char_end]
+        };
 
         let before_last_height = (last_line.baseline_y - last_line.max_ascent) as usize;