diff --git a/src/Umbraco.Core/Persistence/Querying/PocoToSqlExpressionHelper.cs b/src/Umbraco.Core/Persistence/Querying/PocoToSqlExpressionHelper.cs
index dc5b608e25..456607a348 100644
--- a/src/Umbraco.Core/Persistence/Querying/PocoToSqlExpressionHelper.cs
+++ b/src/Umbraco.Core/Persistence/Querying/PocoToSqlExpressionHelper.cs
@@ -468,6 +468,9 @@ namespace Umbraco.Core.Persistence.Querying
             if(fieldType == typeof(DateTime))
                 return "'" + EscapeParam(((DateTime)value).ToString(CultureInfo.InvariantCulture)) + "'";
 
+            if (fieldType == typeof(bool))
+                return ((bool)value) ? Convert.ToString(1, CultureInfo.InvariantCulture) : Convert.ToString(0, CultureInfo.InvariantCulture);
+
             return ShouldQuoteValue(fieldType)
                     ? "'" + EscapeParam(value) + "'"
                     : value.ToString();