diff --git a/src/api/api_context.h b/src/api/api_context.h
index de492bb45..fa6754120 100644
--- a/src/api/api_context.h
+++ b/src/api/api_context.h
@@ -58,7 +58,7 @@ namespace api {
         bv_util                    m_bv_util;
         datalog::dl_decl_util      m_datalog_util;
         fpa_util                   m_fpa_util;
-	datatype_util              m_dtutil;
+        datatype_util              m_dtutil;
         seq_util                   m_sutil;
 
         // Support for old solver API
@@ -67,7 +67,6 @@ namespace api {
 
         ast_ref_vector             m_last_result; //!< used when m_user_ref_count == true
         ast_ref_vector             m_ast_trail;   //!< used when m_user_ref_count == false
-        unsigned_vector            m_ast_lim;
 
         ref<api::object>           m_last_obj; //!< reference to the last API object returned by the APIs
 
@@ -122,7 +121,7 @@ namespace api {
         bv_util & bvutil() { return m_bv_util; }
         datalog::dl_decl_util & datalog_util() { return m_datalog_util; }
         fpa_util & fpautil() { return m_fpa_util; }
-	datatype_util& dtutil() { return m_dtutil; }
+        datatype_util& dtutil() { return m_dtutil; }
         seq_util& sutil() { return m_sutil; }
         family_id get_basic_fid() const { return m_basic_fid; }
         family_id get_array_fid() const { return m_array_fid; }
@@ -180,8 +179,6 @@ namespace api {
         void interrupt();
 
         void invoke_error_handler(Z3_error_code c);
-        
-        static void out_of_memory_handler(void * _ctx);
 
         void check_sorts(ast * n);