diff --git a/htdocs/install/mysql/migration/3.0.0-3.1.0.sql b/htdocs/install/mysql/migration/3.0.0-3.1.0.sql
index fa94a5deeed..a4ab666299d 100644
--- a/htdocs/install/mysql/migration/3.0.0-3.1.0.sql
+++ b/htdocs/install/mysql/migration/3.0.0-3.1.0.sql
@@ -63,7 +63,7 @@ ALTER TABLE llx_facturedet ADD UNIQUE INDEX uk_fk_remise_except (fk_remise_excep
 
 ALTER TABLE llx_societe ADD COLUMN fk_currency integer DEFAULT 0 AFTER fk_forme_juridique;
 ALTER TABLE llx_societe ADD COLUMN status tinyint DEFAULT 1;
-ALTER TABLE llx_societe ADD COLUMN logo varchar(255);
+ALTER TABLE llx_societe ADD COLUMN logo varchar(255) DEFAULT NULL;
 
 ALTER TABLE llx_societe_remise MODIFY remise_client double(6,3) DEFAULT 0 NOT NULL;
 
diff --git a/htdocs/install/mysql/tables/llx_societe.sql b/htdocs/install/mysql/tables/llx_societe.sql
index 20440b692d7..0f0cb437750 100644
--- a/htdocs/install/mysql/tables/llx_societe.sql
+++ b/htdocs/install/mysql/tables/llx_societe.sql
@@ -95,13 +95,13 @@ create table llx_societe
   barcode                  varchar(255),                        		-- barcode
   fk_barcode_type          integer NULL   DEFAULT 0,                    -- barcode type
   price_level              integer NULL,                        		-- level of price for multiprices
-  outstanding_limit	       double(24,8)  DEFAULT NULL,				-- allowed outstanding limit
+  outstanding_limit	       double(24,8)   DEFAULT NULL,					-- allowed outstanding limit
   default_lang             varchar(6),									-- default language
-  logo                     varchar(255),
-  canvas				   varchar(32),			                        -- type of canvas if used (null by default)
+  logo                     varchar(255)   DEFAULT NULL,
+  canvas				   varchar(32)    DEFAULT NULL,	                -- type of canvas if used (null by default)
   import_key               varchar(14),                          		-- import key
-  webservices_url          varchar(255),                            -- supplier webservice url
-  webservices_key          varchar(128),                            -- supplier webservice key
+  webservices_url          varchar(255),                            	-- supplier webservice url
+  webservices_key          varchar(128),                            	-- supplier webservice key
   
   fk_multicurrency			integer,
   multicurrency_code		varchar(255)