diff --git a/src/term.rs b/src/term.rs
index b7848844..aa004f1b 100644
--- a/src/term.rs
+++ b/src/term.rs
@@ -446,7 +446,7 @@ impl ansi::Handler for Term {
 
     #[inline]
     fn insert_blank(&mut self, num: usize) {
-        debug_println!("insert_blank: {}", num);
+        err_println!("[unimplemented] insert_blank: {}", num);
     }
 
     #[inline]
@@ -475,17 +475,17 @@ impl ansi::Handler for Term {
 
     #[inline]
     fn identify_terminal(&mut self) {
-        debug_println!("[unimplemented] identify_terminal");
+        err_println!("[unimplemented] identify_terminal");
     }
 
     #[inline]
     fn move_down_and_cr(&mut self, lines: Line) {
-        debug_println!("[unimplemented] move_down_and_cr: {}", lines);
+        err_println!("[unimplemented] move_down_and_cr: {}", lines);
     }
 
     #[inline]
     fn move_up_and_cr(&mut self, lines: Line) {
-        debug_println!("[unimplemented] move_up_and_cr: {}", lines);
+        err_println!("[unimplemented] move_up_and_cr: {}", lines);
     }
 
     #[inline]
@@ -539,17 +539,17 @@ impl ansi::Handler for Term {
 
     #[inline]
     fn substitute(&mut self) {
-        debug_println!("[unimplemented] substitute");
+        err_println!("[unimplemented] substitute");
     }
 
     #[inline]
     fn newline(&mut self) {
-        debug_println!("[unimplemented] newline");
+        err_println!("[unimplemented] newline");
     }
 
     #[inline]
     fn set_horizontal_tabstop(&mut self) {
-        debug_println!("[unimplemented] set_horizontal_tabstop");
+        err_println!("[unimplemented] set_horizontal_tabstop");
     }
 
     #[inline]
@@ -606,27 +606,27 @@ impl ansi::Handler for Term {
 
     #[inline]
     fn delete_chars(&mut self, count: Column) {
-        debug_println!("[unimplemented] delete_chars: {}", count);
+        err_println!("[unimplemented] delete_chars: {}", count);
     }
 
     #[inline]
     fn move_backward_tabs(&mut self, count: i64) {
-        debug_println!("[unimplemented] move_backward_tabs: {}", count);
+        err_println!("[unimplemented] move_backward_tabs: {}", count);
     }
 
     #[inline]
     fn move_forward_tabs(&mut self, count: i64) {
-        debug_println!("[unimplemented] move_forward_tabs: {}", count);
+        err_println!("[unimplemented] move_forward_tabs: {}", count);
     }
 
     #[inline]
     fn save_cursor_position(&mut self) {
-        debug_println!("[unimplemented] save_cursor_position");
+        err_println!("[unimplemented] save_cursor_position");
     }
 
     #[inline]
     fn restore_cursor_position(&mut self) {
-        debug_println!("[unimplemented] restore_cursor_position");
+        err_println!("[unimplemented] restore_cursor_position");
     }
 
     #[inline]
@@ -681,12 +681,12 @@ impl ansi::Handler for Term {
 
     #[inline]
     fn clear_tabs(&mut self, mode: ansi::TabulationClearMode) {
-        debug_println!("[unimplemented] clear_tabs: {:?}", mode);
+        err_println!("[unimplemented] clear_tabs: {:?}", mode);
     }
 
     #[inline]
     fn reset_state(&mut self) {
-        debug_println!("[unimplemented] reset_state");
+        err_println!("[unimplemented] reset_state");
     }
 
     #[inline]