diff --git a/calendar/generate_calendar.php b/calendar/generate_calendar.php
index 88ca397..f974f89 100755
--- a/calendar/generate_calendar.php
+++ b/calendar/generate_calendar.php
@@ -138,7 +138,7 @@
 				// Output macro for inclusion in paper calendar.
 				printf(	"\\newcommand{\\%sBreak%s}{%s--%s}\n",
 					$period_name,
-					ucfirst( $numwords->toWords( $num_breaks ) ),
+					str_replace( "-", "", ucfirst( $numwords->toWords( $num_breaks ) ) ),
 					// If the week start and end dates are in the same month, we only
 					// need to output the month name once.
 					( $week_start->format( 'n' ) == $break_end->format( 'n' ) ) ? $week_start->format( 'j' ) : $week_start->format( 'j M' ),
@@ -163,7 +163,7 @@
 				// Output macro for inclusion in paper calendar.
 				printf(	"\\newcommand{\\%sWeek%s}{%s--%s \\\\ %s}\n",
 					$period_name,
-					ucfirst( $numwords->toWords( $week_number ) ),
+					str_replace( "-", "", ucfirst( $numwords->toWords( $week_number ) ) ),
 					$week_start->format( 'j' ),
 					$week_end->format( 'j' ),
 					$week_end->format( 'M' )
@@ -174,7 +174,7 @@
 				// Output macro for inclusion in paper calendar.
 				printf(	"\\newcommand{\\%sWeek%s}{%s \\\\ --%s}\n",
 					$period_name,
-					ucfirst( $numwords->toWords( $week_number ) ),
+					str_replace( "-", "", ucfirst( $numwords->toWords( $week_number ) ) ),
 					$week_start->format( 'j M' ),
 					$week_end->format( 'j M' )
 				);