diff --git a/app/src/main/java/it/integry/integrywmsnative/gest/prod_recupero_materiale/rest/ProdRecuperMaterialeRESTConsumer.java b/app/src/main/java/it/integry/integrywmsnative/gest/prod_recupero_materiale/rest/ProdRecuperMaterialeRESTConsumer.java
index bfa6841a..c29fc86a 100644
--- a/app/src/main/java/it/integry/integrywmsnative/gest/prod_recupero_materiale/rest/ProdRecuperMaterialeRESTConsumer.java
+++ b/app/src/main/java/it/integry/integrywmsnative/gest/prod_recupero_materiale/rest/ProdRecuperMaterialeRESTConsumer.java
@@ -68,7 +68,7 @@ public class ProdRecuperMaterialeRESTConsumer extends _BaseRESTConsumer {
                 "           dtb_ord_steps.hr_num                                      as hr, " +
                 "           mtb_colr.riga_ord, " +
                 "           CONVERT(INTEGER, ROUND((CAST(dtb_ord_steps.hr_num AS DECIMAL(20, 5)) / " +
-                "                                   SUM(dtb_ord_steps.hr_num) OVER (PARTITION BY mtb_colr.num_collo)) * 100, " +
+                "                                   SUM(CASE WHEN dtb_ord_steps.hr_num > 0 then dtb_ord_steps.hr_num else 1 end) OVER (PARTITION BY mtb_colr.num_collo)) * 100, " +
                 "                                  0))                                as percentage_hr " +
                 "    FROM mtb_colr " +
                 "             INNER JOIN mtb_colt ON mtb_colr.num_collo = mtb_colt.num_collo " +