diff --git a/app/views/projects/gantt.rfpdf b/app/views/projects/gantt.rfpdf
index f5e64b1b3..a293906ba 100644
--- a/app/views/projects/gantt.rfpdf
+++ b/app/views/projects/gantt.rfpdf
@@ -89,7 +89,7 @@ if show_days
 		width = zoom
 		pdf.SetY(y_start + 2 * header_heigth)
 		pdf.SetX(left)
-		pdf.Cell(width, height, day_name(wday)[0,1], "LTR", 0, "C")
+		pdf.Cell(width, height, day_name(wday).first, "LTR", 0, "C")
 		left = left + width
 		wday = wday + 1
 		wday = 1 if wday > 7
diff --git a/app/views/projects/gantt.rhtml b/app/views/projects/gantt.rhtml
index 16ccb932b..6359f0429 100644
--- a/app/views/projects/gantt.rhtml
+++ b/app/views/projects/gantt.rhtml
@@ -162,7 +162,7 @@ if show_days
 	width =  zoom - 1
 	%>
 	<div style="left:<%= left %>px;top:37px;width:<%= width %>px;height:<%= height %>px;font-size:0.7em;<%= "background:#f1f1f1;" if wday > 5 %>" class="gantt_hdr">
-	<%= day_name(wday)[0,1] %>
+	<%= day_name(wday).first %>
 	</div>
 	<% 
 	left = left + width+1