diff --git a/theme/boost/scss/moodle/calendar.scss b/theme/boost/scss/moodle/calendar.scss
index 93ac8e92005..4a0451e660d 100644
--- a/theme/boost/scss/moodle/calendar.scss
+++ b/theme/boost/scss/moodle/calendar.scss
@@ -620,7 +620,10 @@ table.calendartable caption {
                         .previous,
                         .next {
                             width: 30%;
-                            font-size: 0.8em;
+
+                            .arrow_text {
+                                display: none;
+                            }
                         }
                     }
 
diff --git a/theme/boost/style/moodle.css b/theme/boost/style/moodle.css
index d222c26414e..2e912659b92 100644
--- a/theme/boost/style/moodle.css
+++ b/theme/boost/style/moodle.css
@@ -17360,7 +17360,10 @@ table.calendartable caption {
   section:not(#region-main) .block.block_calendar_month .maincalendar .calendarwrapper .previous,
   section:not(#region-main) .block.block_calendar_month .maincalendar .calendarwrapper .next {
     width: 30%;
-    font-size: 0.8em;
+  }
+  section:not(#region-main) .block.block_calendar_month .maincalendar .calendarwrapper .previous .arrow_text,
+  section:not(#region-main) .block.block_calendar_month .maincalendar .calendarwrapper .next .arrow_text {
+    display: none;
   }
   section:not(#region-main) .block.block_calendar_month .maincalendar .calendartable.calendarmonth th,
   section:not(#region-main) .block.block_calendar_month .maincalendar .calendartable.calendarmonth td {
diff --git a/theme/classic/style/moodle.css b/theme/classic/style/moodle.css
index 568285a7e55..1f0b8b81ec4 100644
--- a/theme/classic/style/moodle.css
+++ b/theme/classic/style/moodle.css
@@ -17360,7 +17360,10 @@ table.calendartable caption {
   section:not(#region-main) .block.block_calendar_month .maincalendar .calendarwrapper .previous,
   section:not(#region-main) .block.block_calendar_month .maincalendar .calendarwrapper .next {
     width: 30%;
-    font-size: 0.8em;
+  }
+  section:not(#region-main) .block.block_calendar_month .maincalendar .calendarwrapper .previous .arrow_text,
+  section:not(#region-main) .block.block_calendar_month .maincalendar .calendarwrapper .next .arrow_text {
+    display: none;
   }
   section:not(#region-main) .block.block_calendar_month .maincalendar .calendartable.calendarmonth th,
   section:not(#region-main) .block.block_calendar_month .maincalendar .calendartable.calendarmonth td {