diff --git a/tests/unit/bitfield.tcl b/tests/unit/bitfield.tcl
index 368ff9fc..26e47db0 100644
--- a/tests/unit/bitfield.tcl
+++ b/tests/unit/bitfield.tcl
@@ -184,4 +184,9 @@ start_server {tags {"bitops"}} {
             }
         }
     }
+
+    test {BITFIELD regression for #3221} {
+        r set bits 1
+        r bitfield bits get u1 0
+    } {0}
 }