diff --git a/include/class/tax_summary.class.php b/include/class/tax_summary.class.php
index 8c482b238..ce950707c 100644
--- a/include/class/tax_summary.class.php
+++ b/include/class/tax_summary.class.php
@@ -104,31 +104,34 @@ class Tax_Summary
        /*-------------SALE ---------------------------------*/
         $sql="select count(*) 
              from 
-                jrnx 
-                join quant_sold on (quant_sold.j_id = jrnx.j_id)
+                quant_sold
              where  
-                   jrnx.j_jrn_def in (select jrn_def_id from jrn_def where jrn_def_type = 'VEN')
-                    and j_date >= to_date($1,'DD.MM.YYYY') 
-                    and j_date <= to_date($2,'DD.MM.YYYY') 
+		    j_id  in (select j_id from jrnx 
+			where 
+	                   jrnx.j_jrn_def in (select jrn_def_id from jrn_def where jrn_def_type = 'VEN')
+        	            and j_date >= to_date($1,'DD.MM.YYYY') 
+                	    and j_date <= to_date($2,'DD.MM.YYYY') 
+			)
                   ";
         $cnt=$this->db->get_value($sql,[$this->date_start,$this->date_end]);
         if ($cnt == 0) {
-            throw new Exception(_("Aucune Donnée"));
+            throw new Exception(_("Données manquantes"));
         }
         /*-------------Purchase ---------------------------------*/
         $sql="select count(*) 
              from 
-                jrnx 
-                join quant_purchase as qp on (jrnx.j_id = qp.j_id)
+                quant_purchase
              where  
-                   jrnx.j_jrn_def in (select jrn_def_id from jrn_def where jrn_def_type = 'ACH')
-                    and j_date >= to_date($1,'DD.MM.YYYY') 
-                    and j_date <= to_date($2,'DD.MM.YYYY') 
+		    j_id  in (select j_id from jrnx 
+			where 
+	                   jrnx.j_jrn_def in (select jrn_def_id from jrn_def where jrn_def_type = 'VEN')
+        	            and j_date >= to_date($1,'DD.MM.YYYY') 
+                	    and j_date <= to_date($2,'DD.MM.YYYY') 
+			)
                              ";
         $cnt=$this->db->get_value($sql,[$this->date_start,$this->date_end]);
-        if ($cnt == 0) {
-            throw new Exception(_("Aucune Donnée"));
-
+        if ($cnt > 0) {
+            throw new Exception(_("Données manquantes"));
         }
     }
 
diff --git a/unit-test/include/class/acc_computeTest.class.php b/unit-test/include/class/acc_computeTest.class.php
index 1b19e5fb9..09b9386af 100644
--- a/unit-test/include/class/acc_computeTest.class.php
+++ b/unit-test/include/class/acc_computeTest.class.php
@@ -155,7 +155,14 @@ class Acc_ComputeTest extends TestCase
      */
     public function testCorrect()
     {
+        $this->object->amount=100.0;
+        $this->object->amount_perso=15.3333;
+        $this->object->amount_vat=20.6666;
+        $this->object->amount_nd_vat=1.5;
         $this->object->correct();
+        $this->assertEquals($this->object->amount,84.6667);
+        $this->assertEquals($this->object->amount_perso,15.3333);
+        $this->assertEquals($this->object->amount_vat,20.67);
     }
 
     /**
@@ -167,6 +174,7 @@ class Acc_ComputeTest extends TestCase
         $this->object->verify();
         $new=new Acc_Compute();
         $this->object->verify($new);
+        $this->assertTrue(TRUE);
     }
 
     /**
@@ -176,7 +184,11 @@ class Acc_ComputeTest extends TestCase
      */
     public function testDisplay()
     {
+        ob_start();
        $this->object->display();
+       $result=  ob_get_flush();
+       $this->assertStringStartsWith("key amount Description amount value is 0<br>key amount_vat Description amount_vat value is 0<br>",$result);
+       $this->assertStringEndsWith("<br>key amount_perso_rate Description amount_perso_rate value is 0<br>",$result);
     }
 
     /**