diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index a8281aae34..68ec529edc 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -8,3 +8,4 @@
 - Add a test to check if the worldpop service is available
 - Fix github actions
 - Add TARGET landcover production
+- Force TARGET ROOF fraction to 0.75 when BUILDING fraction is greater than 0.75
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 655fae5dcd..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",
-                            BUILDING_FRACTION 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",