diff --git a/src/Backends/Tabular/TabularBackends.cpp b/src/Backends/Tabular/TabularBackends.cpp
index b55520a1..24476ae7 100644
--- a/src/Backends/Tabular/TabularBackends.cpp
+++ b/src/Backends/Tabular/TabularBackends.cpp
@@ -614,6 +614,7 @@ void CoolProp::TabularDataSet::build_tables(shared_ptr<CoolProp::AbstractState>
     }
     single_phase_logph.build(AS);
     single_phase_logpT.build(AS);
+    tables_loaded = true;
 }
 
 /// Return the set of tabular datasets