diff --git a/geoindicators/src/main/groovy/org/orbisgis/geoclimate/geoindicators/GridIndicators.groovy b/geoindicators/src/main/groovy/org/orbisgis/geoclimate/geoindicators/GridIndicators.groovy
index 297957c240..b3ecff825b 100644
--- a/geoindicators/src/main/groovy/org/orbisgis/geoclimate/geoindicators/GridIndicators.groovy
+++ b/geoindicators/src/main/groovy/org/orbisgis/geoclimate/geoindicators/GridIndicators.groovy
@@ -386,7 +386,7 @@ String formatGrid4Target(JdbcDataSource datasource, String gridTable) {
                             THE_GEOM,
                             ID_COL, ID_ROW,
                             CAST(row_number() over(ORDER BY ID_ROW DESC) as integer) as "FID",
-                            CASE WHEN BUILDING_FRACTION>0.75 THEN 0.75 ELSE END AS "roof",
+                            CASE WHEN BUILDING_FRACTION>0.75 THEN 0.75 ELSE BUILDING_FRACTION END AS "roof",
                             ROAD_FRACTION AS "road",
                             WATER_FRACTION AS "watr",
                             IMPERVIOUS_FRACTION AS "conc",