diff --git a/src/smt/smt_quantifier.cpp b/src/smt/smt_quantifier.cpp
index 77d654bfb..a9daff7f6 100644
--- a/src/smt/smt_quantifier.cpp
+++ b/src/smt/smt_quantifier.cpp
@@ -240,7 +240,7 @@ namespace smt {
              vector<std::tuple<enode *, enode *>> & used_enodes) {
 
             if (pat == nullptr) {
-                trace_stream() << "[inst-discovered] MBQI " << static_cast<void*>(f) << " #" << q->get_id();
+                trace_stream() << "[inst-discovered] MBQI " << " #" << q->get_id();
                 for (unsigned i = 0; i < num_bindings; ++i) {
                     trace_stream() << " #" << bindings[num_bindings - i - 1]->get_owner_id();
                 }
diff --git a/src/smt/smt_theory.cpp b/src/smt/smt_theory.cpp
index 86f1c1141..8773b7b89 100644
--- a/src/smt/smt_theory.cpp
+++ b/src/smt/smt_theory.cpp
@@ -211,7 +211,7 @@ namespace smt {
         symbol const & family_name = m.get_family_name(get_family_id());
 
         if (pattern_id == UINT_MAX) {
-            out << "[inst-discovered] theory-solving " << static_cast<void *>(nullptr) << " " << family_name << "#";
+            out << "[inst-discovered] theory-solving " << " " << family_name << "#";
             if (axiom_id != UINT_MAX)
                 out << axiom_id;
             for (unsigned i = 0; i < num_bindings; ++i) {