diff --git a/src/main/java/fr/abes/sudoc/component/BaseXmlFunctionsCaller.java b/src/main/java/fr/abes/sudoc/component/BaseXmlFunctionsCaller.java
index 165185b..a3dca1b 100644
--- a/src/main/java/fr/abes/sudoc/component/BaseXmlFunctionsCaller.java
+++ b/src/main/java/fr/abes/sudoc/component/BaseXmlFunctionsCaller.java
@@ -45,7 +45,7 @@ public String baconProvider035(Integer provider) throws SQLRecoverableException,
     }
 
 
-    public String doiToPpn(String doi) throws UncategorizedSQLException, EmptyResultDataAccessException {
+    public List<String> doiToPpn(String doi) throws UncategorizedSQLException {
         StringBuilder request = new StringBuilder("select a.ppn from autorites.biblio_table_FRBR_0xx a where  ");
         request.append("upper(SUBSTR(a.datas,1,50)) = '");
         request.append(doi.toUpperCase());
@@ -53,6 +53,6 @@ public String doiToPpn(String doi) throws UncategorizedSQLException, EmptyResult
         request.append("and a.id in (select /*+ no_index(b BIBLIO_TABLE_FRBR_0XX_IDX_DATA) */ id from autorites.biblio_table_FRBR_0xx b where ");
         request.append("a.id=b.id and ");
         request.append("b.tag='017$2' and SUBSTR(b.datas,1,50)='DOI' and a.POSFIELD=b.POSFIELD  and b.POSSUBFIELD='2')");
-        return baseXmlJdbcTemplate.queryForObject(request.toString(), String.class);
+        return baseXmlJdbcTemplate.queryForList(request.toString(), String.class);
     }
 }
diff --git a/src/main/java/fr/abes/sudoc/service/DoiService.java b/src/main/java/fr/abes/sudoc/service/DoiService.java
index 514fadd..6277970 100644
--- a/src/main/java/fr/abes/sudoc/service/DoiService.java
+++ b/src/main/java/fr/abes/sudoc/service/DoiService.java
@@ -32,12 +32,17 @@ public boolean checkFormat(String doi) {
     @Override
     public List<String> getPpnFromIdentifiant(String doi) throws IOException, IllegalPpnException {
         try {
-            return Collections.singletonList(caller.doiToPpn(doi));
+            List<String> result = caller.doiToPpn(doi);
+            if (result.isEmpty())
+                throw new IllegalPpnException("Aucune notice ne correspond à la recherche sur le doi " + doi);
+            else
+                if (result.size() != 1) {
+                    throw new IllegalPpnException("Plusieurs résultats à la recherche sur doi " + doi);
+                } else {
+                    return Collections.singletonList(result.get(0));
+                }
         } catch (UncategorizedSQLException ex) {
             throw new IOException("Incident technique lors de l'accès à la base de données");
-        } catch (EmptyResultDataAccessException ex) {
-            throw new IllegalPpnException("Aucune notice ne correspond à la recherche");
         }
     }
-
 }