diff --git a/htdocs/core/lib/pdf.lib.php b/htdocs/core/lib/pdf.lib.php
index 5000e00b345..3223412dc5f 100644
--- a/htdocs/core/lib/pdf.lib.php
+++ b/htdocs/core/lib/pdf.lib.php
@@ -758,7 +758,9 @@ function pdf_pagefoot(&$pdf,$outputlangs,$paramfreetext,$fromcompany,$marge_bass
 	// Capital
 	if ($fromcompany->capital)
 	{
-		$line3.=($line3?" - ":"").$outputlangs->transnoentities("CapitalOf",price($fromcompany->capital, 0, $outputlangs, 0, 0, 0, $conf->currency));
+		$tmpamounttoshow = price2num($fromcompany->capital); // This field is a free string
+		if (is_numeric($tmpamounttoshow) && $tmpamounttoshow > 0) $line3.=($line3?" - ":"").$outputlangs->transnoentities("CapitalOf",price($tmpamounttoshow, 0, $outputlangs, 0, 0, 0, $conf->currency));
+		else $line3.=($line3?" - ":"").$outputlangs->transnoentities("CapitalOf",$tmpamounttoshow,$outputlangs);
 	}
 	// Prof Id 1
 	if ($fromcompany->idprof1 && ($fromcompany->country_code != 'FR' || ! $fromcompany->idprof2))