diff --git a/src/ast/rewriter/seq_regex_bisim.cpp b/src/ast/rewriter/seq_regex_bisim.cpp
index 5e849017c7..9e1a8e4986 100644
--- a/src/ast/rewriter/seq_regex_bisim.cpp
+++ b/src/ast/rewriter/seq_regex_bisim.cpp
@@ -102,9 +102,7 @@ namespace seq {
             expr* e = work.back();
             work.pop_back();
             expr* c = nullptr, * t = nullptr, * f = nullptr;
-            if (m.is_ite(e, c, t, f) ||
-                m_util.re.is_union(e, t, f) ||
-                m_util.re.is_antimirov_union(e, t, f)) {
+            if (m.is_ite(e, c, t, f)) {
                 if (seen.insert_if_not_there(t))
                     work.push_back(t);
                 if (seen.insert_if_not_there(f))
diff --git a/src/test/main.cpp b/src/test/main.cpp
index b10446aa92..6314296e46 100644
--- a/src/test/main.cpp
+++ b/src/test/main.cpp
@@ -114,7 +114,6 @@
     X(api_special_relations) \
     X(arith_rewriter) \
     X(range_predicate) \
-    X(range_predicate_translator) \
     X(regex_range_collapse) \
     X(check_assumptions) \
     X(smt_context) \