1 files changed, 5 insertions, 2 deletions
diff --git a/input.c b/input.c
index 26a5266..90b6232 100644
--- a/input.c
+++ b/input.c
@@ -83,8 +83,9 @@ show_value()
 
   if(fetestexcept(FE_ALL_EXCEPT)) {
     set_string("Err");
+    bell();
     showing_err = 1;
-	 return;
+    return;
   }
 
   if (base == 2)
@@ -236,8 +237,10 @@ key(char c)
 
   feclearexcept(FE_ALL_EXCEPT);
 
-  if(showing_err && c != 27 && c != 'C')
+  if(showing_err && c != 27 && c != 'C') {
+    bell();
     return;
+  }
 
   switch (c)
   {