diff --git a/bdtopo/src/main/groovy/org/orbisgis/geoclimate/bdtopo/AbstractBDTopoWorkflow.groovy b/bdtopo/src/main/groovy/org/orbisgis/geoclimate/bdtopo/AbstractBDTopoWorkflow.groovy
index 05e9e04424..cec231a44e 100644
--- a/bdtopo/src/main/groovy/org/orbisgis/geoclimate/bdtopo/AbstractBDTopoWorkflow.groovy
+++ b/bdtopo/src/main/groovy/org/orbisgis/geoclimate/bdtopo/AbstractBDTopoWorkflow.groovy
@@ -602,6 +602,9 @@ abstract class AbstractBDTopoWorkflow extends BDTopoUtils {
                                                             "IMPERVIOUS_FRACTION",
                                                             "VEGETATION_FRACTION"])
                         }
+                        if(x_size != y_size){
+                            throw new Exception("TARGET model supports only regular grid. Please set the same x and y resolutions")
+                        }
                         def grid_indicators_tmp = [
                                 "x_size"    : x_size,
                                 "y_size"    : y_size,
@@ -913,7 +916,7 @@ abstract class AbstractBDTopoWorkflow extends BDTopoUtils {
                     }
                     //We must transform the grid_indicators to produce the target land input
                     if(processing_parameters.rsu_indicators.indicatorUse.contains("TARGET")){
-                        results.put("grid_target", Geoindicators.GridIndicators.formatGrid4Target(h2gis_datasource, rasterizedIndicators))
+                        results.put("grid_target", Geoindicators.GridIndicators.formatGrid4Target(h2gis_datasource, rasterizedIndicators, x_size))
                     }
                     info("End computing grid_indicators")
                 }
diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index 68ec529edc..854bd19899 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -9,3 +9,4 @@
 - Fix github actions
 - Add TARGET landcover production
 - Force TARGET ROOF fraction to 0.75 when BUILDING fraction is greater than 0.75
+- Force TARGET W indicator to the grid resolution
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 b3ecff825b..17b9a6bcfb 100644
--- a/geoindicators/src/main/groovy/org/orbisgis/geoclimate/geoindicators/GridIndicators.groovy
+++ b/geoindicators/src/main/groovy/org/orbisgis/geoclimate/geoindicators/GridIndicators.groovy
@@ -372,11 +372,12 @@ String gridDistances(JdbcDataSource datasource, String input_polygons, String gr
  *
  * @param datasource input database
  * @param gridTable input grid_indicators
+ * @param resolution grid resolution in meters
  * @return a grid formated
  *
  * @author Erwan Bocher, CNRS
  */
-String formatGrid4Target(JdbcDataSource datasource, String gridTable) {
+String formatGrid4Target(JdbcDataSource datasource, String gridTable, float resolution) {
     //Format target landcover
     def grid_target = postfix("grid_target")
     try {
@@ -400,7 +401,9 @@ String formatGrid4Target(JdbcDataSource datasource, String gridTable) {
                             0  AS "irr",
                             AVG_HEIGHT_ROOF_AREA_WEIGHTED AS "H",
                             CASE WHEN
-                            STREET_WIDTH IS NULL THEN 0.1 ELSE STREET_WIDTH END AS "W"
+                            STREET_WIDTH IS NULL THEN 0.1 
+                            WHEN STREET_WIDTH > ${resolution} THEN ${resolution}
+                            ELSE STREET_WIDTH END AS "W"
                             FROM ${gridTable} 
                             """)
         return grid_target
diff --git a/osm/src/main/groovy/org/orbisgis/geoclimate/osm/WorkflowOSM.groovy b/osm/src/main/groovy/org/orbisgis/geoclimate/osm/WorkflowOSM.groovy
index 4253ae5282..0dd447ca6f 100644
--- a/osm/src/main/groovy/org/orbisgis/geoclimate/osm/WorkflowOSM.groovy
+++ b/osm/src/main/groovy/org/orbisgis/geoclimate/osm/WorkflowOSM.groovy
@@ -637,7 +637,7 @@ Map osm_processing(JdbcDataSource h2gis_datasource, def processing_parameters, d
                         }
                         //We must transform the grid_indicators to produce the target land input
                         if(rsu_indicators_params.indicatorUse.contains("TARGET")){
-                            results.put("grid_target", Geoindicators.GridIndicators.formatGrid4Target(h2gis_datasource, rasterizedIndicators))
+                            results.put("grid_target", Geoindicators.GridIndicators.formatGrid4Target(h2gis_datasource, rasterizedIndicators, x_size))
                         }
                         info("End computing grid_indicators")
                     }
@@ -923,6 +923,11 @@ def extractProcessingParameters(def processing_parameters) throws Exception {
                                                         "IMPERVIOUS_FRACTION",
                                                         "VEGETATION_FRACTION"])
                     }
+
+                    if(x_size != y_size){
+                        throw new Exception("TARGET model supports only regular grid. Please set the same x and y resolutions")
+                    }
+
                     def grid_indicators_tmp = [
                             "x_size"    : x_size,
                             "y_size"    : y_size,
diff --git a/osm/src/test/groovy/org/orbisgis/geoclimate/osm/WorflowOSMTest.groovy b/osm/src/test/groovy/org/orbisgis/geoclimate/osm/WorflowOSMTest.groovy
index fee294d8f7..fee2a9059d 100644
--- a/osm/src/test/groovy/org/orbisgis/geoclimate/osm/WorflowOSMTest.groovy
+++ b/osm/src/test/groovy/org/orbisgis/geoclimate/osm/WorflowOSMTest.groovy
@@ -724,7 +724,7 @@ class WorflowOSMTest extends WorkflowAbstractTest {
         def grid_size = 100
         location =[47.214976592711274,-1.6425595375815742,47.25814872718718,-1.5659501122281323]
         //location=[47.215334,-1.558058,47.216646,-1.556185]
-        //location = nominatim.bbox
+        location = nominatim.bbox
         //location=[51.2, 1.0, 51.4, 1.2]
         /* location =[ 48.84017284026897,
                     2.3061887733275785,
@@ -759,7 +759,7 @@ class WorflowOSMTest extends WorkflowAbstractTest {
                 "parameters"  :
                         ["distance"             : 0,
                          "rsu_indicators"       : [
-                                 "indicatorUse": ["LCZ", "TEB", "TARGET"] //, "UTRF"]
+                                 "indicatorUse": ["TARGET"] //, "UTRF"]
 
                          ], "grid_indicators"   : [
                                 "x_size"    : grid_size,