diff --git a/lib/cartodb/models/dataview/histogram.js b/lib/cartodb/models/dataview/histogram.js
index ec3e616e..9c63b836 100644
--- a/lib/cartodb/models/dataview/histogram.js
+++ b/lib/cartodb/models/dataview/histogram.js
@@ -85,8 +85,8 @@ var overrideBasicsQueryTpl = dot.template([
 ].join('\n'));
 
 var iqrQueryTpl = dot.template([
-    'iqrange AS (',
-    '  SELECT max(quartile_max) - min(quartile_max) AS iqr',
+    '__cdb_iqrange AS (',
+    '  SELECT max(quartile_max) - min(quartile_max) AS __cdb_iqr',
     '  FROM (',
     '    SELECT quartile, max(_cdb_iqr_column) AS quartile_max from (',
     '      SELECT {{=it._column}} AS _cdb_iqr_column, ntile(4) over (order by {{=it._column}}',
@@ -100,17 +100,17 @@ var iqrQueryTpl = dot.template([
 
 var binsQueryTpl = dot.template([
     '__cdb_bins AS (',
-    '  SELECT CASE WHEN total_rows = 0 OR iqr = 0',
+    '  SELECT CASE WHEN total_rows = 0 OR __cdb_iqr = 0',
     '      THEN 1',
     '      ELSE GREATEST(',
     '        LEAST({{=it._minBins}}, CAST(total_rows AS INT)),',
     '        LEAST(',
-    '          CAST(((max_val - min_val) / (2 * iqr * power(total_rows, 1/3))) AS INT),',
+    '          CAST(((max_val - min_val) / (2 * __cdb_iqr * power(total_rows, 1/3))) AS INT),',
     '          {{=it._maxBins}}',
     '        )',
     '      )',
     '    END AS __cdb_bins_number',
-    '  FROM __cdb_basics, iqrange, __cdb_filtered_source',
+    '  FROM __cdb_basics, __cdb_iqrange, __cdb_filtered_source',
     '  LIMIT 1',
     ')'
 ].join('\n'));