diff --git a/backend/src/main/java/ovh/herisson/Clyde/Repositories/ScientificPublications/StatsRepository.java b/backend/src/main/java/ovh/herisson/Clyde/Repositories/ScientificPublications/StatsRepository.java
index a228ac9..0dfabfe 100644
--- a/backend/src/main/java/ovh/herisson/Clyde/Repositories/ScientificPublications/StatsRepository.java
+++ b/backend/src/main/java/ovh/herisson/Clyde/Repositories/ScientificPublications/StatsRepository.java
@@ -19,22 +19,22 @@ public interface StatsRepository extends CrudRepository<Research,Long> {
     Iterable<Map<String ,Integer>> viewsByTopics();
 
 
-    @Query("select new map(r.domain as label, count(r.language) as y) from Research r group by r.domain")
+    @Query("select new map(r.domain as label, count(distinct r.language) as y) from Research r group by r.domain")
     Iterable<Map<String ,Integer>> languageByTopics();
 
-    @Query("select new map(to_char(r.releaseDate,'YYYY') as label,  count(r.language) as y) from Research r group by to_char(r.releaseDate,'YYYY')")
+    @Query("select new map(to_char(r.releaseDate,'YYYY') as label,  count(distinct r.language) as y) from Research r group by to_char(r.releaseDate,'YYYY')")
     Iterable<Map<String ,Integer>> languageByYears();
 
-    @Query("select new map(to_char(r.releaseDate, 'month') as label, count(r.language) as y) from Research r group by to_char(r.releaseDate, 'month')")
+    @Query("select new map(to_char(r.releaseDate, 'month') as label, count(distinct r.language) as y) from Research r group by to_char(r.releaseDate, 'month')")
     Iterable<Map<String ,Integer>> languageByMonths();
 
-    @Query("select new map(to_char(r.releaseDate,'YYYY') as label, count(r) as y) from Research r group by to_char(r.releaseDate,'YYYY')")
+    @Query("select new map(to_char(r.releaseDate,'YYYY') as label, count(distinct r) as y) from Research r group by to_char(r.releaseDate,'YYYY')")
     Iterable<Map<String ,Integer>> researchesByYears();
 
-    @Query("select new map(r.domain as label, count(r) as y) from Research r group by r.domain")
+    @Query("select new map(r.domain as label, count(distinct r) as y) from Research r group by r.domain")
     Iterable<Map<String ,Integer>> researchesByTopics();
 
-    @Query("select new map(to_char(r.releaseDate, 'month') as label, count(r) as y) from Research r group by to_char(r.releaseDate, 'month')")
+    @Query("select new map(to_char(r.releaseDate, 'month') as label, count(distinct r) as y) from Research r group by to_char(r.releaseDate, 'month')")
     Iterable<Map<String ,Integer>> researchesByMonth();
 
 }