diff --git a/23-fixes/drivers/screen.c b/23-fixes/drivers/screen.c
index 1aed626..428d83d 100644
--- a/23-fixes/drivers/screen.c
+++ b/23-fixes/drivers/screen.c
@@ -44,11 +44,13 @@ void kprint(char *message) {
     kprint_at(message, -1, -1);
 }
 
-void kprint_backspace() {
-    int offset = get_cursor_offset()-2;
-    int row = get_offset_row(offset);
-    int col = get_offset_col(offset);
-    print_char(0x08, col, row, WHITE_ON_BLACK);
+void kprint_backspace(char key_buffer[256]) {
+    if (strlen(key_buffer) != 0) {
+        int offset = get_cursor_offset()-2;
+        int row = get_offset_row(offset);
+        int col = get_offset_col(offset);
+        print_char(0x08, col, row, WHITE_ON_BLACK);
+    }
 }