diff --git a/src/ast/arith_decl_plugin.cpp b/src/ast/arith_decl_plugin.cpp
index 4778caf89..a1d067a32 100644
--- a/src/ast/arith_decl_plugin.cpp
+++ b/src/ast/arith_decl_plugin.cpp
@@ -370,7 +370,7 @@ inline func_decl * arith_decl_plugin::mk_func_decl(decl_kind k, bool is_real) {
         if (is_real) { 
             return m_manager->mk_func_decl(symbol("^0"), m_real_decl, m_real_decl, m_real_decl, func_decl_info(m_family_id, OP_POWER0));
         }
-        return m_manager->mk_func_decl(symbol("^0"), m_int_decl, m_int_decl, m_int_decl, func_decl_info(m_family_id, OP_POWER0));
+        return m_manager->mk_func_decl(symbol("^0"), m_int_decl, m_int_decl, m_real_decl, func_decl_info(m_family_id, OP_POWER0));
     case OP_TO_REAL: return m_to_real_decl;
     case OP_TO_INT:  return m_to_int_decl;
     case OP_IS_INT:  return m_is_int_decl;
@@ -834,7 +834,7 @@ bool arith_util::is_considered_uninterpreted(func_decl* f, unsigned n, expr* con
 func_decl* arith_util::mk_ipower0() {
     sort* s = mk_int();
     sort* rs[2] = { s, s };
-    return m_manager.mk_func_decl(arith_family_id, OP_POWER0, 0, nullptr, 2, rs, s);
+    return m_manager.mk_func_decl(arith_family_id, OP_POWER0, 0, nullptr, 2, rs, mk_real());
 }
 
 func_decl* arith_util::mk_rpower0() {