diff -r 8dc0a00b1db4 -r 107c12c3e49d www/rec_print.php
--- a/www/rec_print.php	Thu Nov 15 17:17:33 2018 +0100
+++ b/www/rec_print.php	Thu Nov 15 22:22:51 2018 +0100
@@ -156,8 +156,8 @@
 			$this->Ln();
 		}
 
-		$row['est_og'] = estimate_og($sugf, floatval($row['batch_size']));
-		$preboil_sg = estimate_og($sugf, floatval($row['boil_size']));
+		$row['est_og'] = estimate_sg($sugf, floatval($row['batch_size']));
+		$preboil_sg = estimate_sg($sugf, floatval($row['boil_size']));
 		$this->SetFillColor(210,245,255);
 		$this->Cell($vul+62,5,'',0,0,'L',false);
 		$this->Cell(20,5,sprintf("%8.3f",$total_fermentables),0,0,'R',true);