diff --git a/htdocs/core/lib/pdf.lib.php b/htdocs/core/lib/pdf.lib.php
index 47f25af52c1..bd08331552d 100644
--- a/htdocs/core/lib/pdf.lib.php
+++ b/htdocs/core/lib/pdf.lib.php
@@ -223,25 +223,25 @@ function pdf_build_address($outputlangs,$sourcecompany,$targetcompany='',$target
 		if ($targetcompany->tva_intra) $stringaddress.="\n".$outputlangs->transnoentities("VATIntraShort").': '.$outputlangs->convToOutputCharset($targetcompany->tva_intra);
 
 		// Professionnal Ids
-		if ($conf->global->MAIN_PROFID1_IN_ADDRESS)
+		if (! empty($conf->global->MAIN_PROFID1_IN_ADDRESS) && ! empty($targetcompany->idprof1))
 		{
 			$tmp=$outputlangs->transcountrynoentities("ProfId1",$targetcompany->country_code);
 			if (preg_match('/\((.+)\)/',$tmp,$reg)) $tmp=$reg[1];
 			$stringaddress.="\n".$tmp.': '.$outputlangs->convToOutputCharset($targetcompany->idprof1);
 		}
-		if ($conf->global->MAIN_PROFID2_IN_ADDRESS)
+		if (! empty($conf->global->MAIN_PROFID2_IN_ADDRESS) && ! empty($targetcompany->idprof2))
 		{
 			$tmp=$outputlangs->transcountrynoentities("ProfId2",$targetcompany->country_code);
 			if (preg_match('/\((.+)\)/',$tmp,$reg)) $tmp=$reg[1];
 			$stringaddress.="\n".$tmp.': '.$outputlangs->convToOutputCharset($targetcompany->idprof2);
 		}
-		if ($conf->global->MAIN_PROFID3_IN_ADDRESS)
+		if (! empty($conf->global->MAIN_PROFID3_IN_ADDRESS) && ! empty($targetcompany->idprof3))
 		{
 			$tmp=$outputlangs->transcountrynoentities("ProfId3",$targetcompany->country_code);
 			if (preg_match('/\((.+)\)/',$tmp,$reg)) $tmp=$reg[1];
 			$stringaddress.="\n".$tmp.': '.$outputlangs->convToOutputCharset($targetcompany->idprof3);
 		}
-		if ($conf->global->MAIN_PROFID4_IN_ADDRESS)
+		if (! empty($conf->global->MAIN_PROFID4_IN_ADDRESS) && ! empty($targetcompany->idprof4))
 		{
 			$tmp=$outputlangs->transcountrynoentities("ProfId4",$targetcompany->country_code);
 			if (preg_match('/\((.+)\)/',$tmp,$reg)) $tmp=$reg[1];