diff --git a/htdocs/lib/mysql.lib.php b/htdocs/lib/mysql.lib.php
index 1d4675e0222..8766843c6d9 100644
--- a/htdocs/lib/mysql.lib.php
+++ b/htdocs/lib/mysql.lib.php
@@ -326,7 +326,7 @@ class DoliDb
 
     function commit()
     {
-        if ($this->transaction_opened==1)
+        if ($this->transaction_opened<=1)
         {
             $ret=$this->query("COMMIT");
             if ($ret) $this->transaction_opened=0;
@@ -346,7 +346,7 @@ class DoliDb
 
     function rollback()
     {
-        if ($this->transaction_opened==1)
+        if ($this->transaction_opened<=1)
         {
             $ret=$this->query("ROLLBACK");
             $this->transaction_opened=0;
@@ -354,6 +354,7 @@ class DoliDb
         }
         else
         {
+            $this->transaction_opened--;
             return 1;
         }
     }
diff --git a/htdocs/lib/pgsql.lib.php b/htdocs/lib/pgsql.lib.php
index b206a533088..0282240a82c 100644
--- a/htdocs/lib/pgsql.lib.php
+++ b/htdocs/lib/pgsql.lib.php
@@ -307,7 +307,7 @@ class DoliDb
     */
     function commit()
     {
-        if ($this->transaction_opened==1)
+        if ($this->transaction_opened<=1)
         {
             $ret=$this->query("COMMIT;");
             if ($ret) $this->transaction_opened=0;
@@ -326,7 +326,7 @@ class DoliDb
     */
     function rollback()
     {
-        if ($this->transaction_opened==1)
+        if ($this->transaction_opened<=1)
         {
             $ret=$this->query("ROLLBACK;");
             $this->transaction_opened=0;
@@ -334,6 +334,7 @@ class DoliDb
         }
         else
         {
+            $this->transaction_opened--;
             return 1;
         }
     }