diff --git a/CHANGELOG.md b/CHANGELOG.md
index ce90e6cd..012307d9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -29,6 +29,7 @@ _This release is scheduled to be released on 2023-04-01._
 ### Fixed
 
 - Fix wrong day labels in envcanada forecast (#2987)
+- Fix for missing default class name prefix for customEvents in calendar
 - Fix weathergov provider hourly forecast (#3008)
 
 ## [2.22.0] - 2023-01-01
diff --git a/modules/default/calendar/calendar.js b/modules/default/calendar/calendar.js
index 8700fbd2..15da1d5d 100644
--- a/modules/default/calendar/calendar.js
+++ b/modules/default/calendar/calendar.js
@@ -665,7 +665,9 @@ Module.register("calendar", {
 			if (typeof ev.symbol !== "undefined" && ev.symbol !== "") {
 				let needle = new RegExp(ev.keyword, "gi");
 				if (needle.test(event.title)) {
-					symbols[0] = ev.symbol;
+					// Get the default prefix for this class name and add to the custom symbol provided
+					const className = this.getCalendarProperty(event.url, "symbolClassName", this.config.defaultSymbolClassName);
+					symbols[0] = className + ev.symbol;
 					break;
 				}
 			}
diff --git a/tests/configs/modules/calendar/custom.js b/tests/configs/modules/calendar/custom.js
index 54d117d7..993ac483 100644
--- a/tests/configs/modules/calendar/custom.js
+++ b/tests/configs/modules/calendar/custom.js
@@ -11,9 +11,10 @@ let config = {
 			module: "calendar",
 			position: "bottom_bar",
 			config: {
+				customEvents: [{ keyword: "CustomEvent", symbol: "dice" }],
 				calendars: [
 					{
-						maximumEntries: 4,
+						maximumEntries: 5,
 						maximumNumberOfDays: 10000,
 						symbol: "birthday-cake",
 						fullDaySymbol: "calendar-day",
diff --git a/tests/e2e/modules/calendar_spec.js b/tests/e2e/modules/calendar_spec.js
index e1bee78e..6218bfb3 100644
--- a/tests/e2e/modules/calendar_spec.js
+++ b/tests/e2e/modules/calendar_spec.js
@@ -48,14 +48,18 @@ describe("Calendar module", () => {
 			await helpers.getDocument();
 		});
 
-		it("should show the custom maximumEntries of 4", async () => {
-			await testElementLength(".calendar .event", 4);
+		it("should show the custom maximumEntries of 5", async () => {
+			await testElementLength(".calendar .event", 5);
 		});
 
-		it("should show the custom calendar symbol in each event", async () => {
+		it("should show the custom calendar symbol in four events", async () => {
 			await testElementLength(".calendar .event .fa-birthday-cake", 4);
 		});
 
+		it("should show a customEvent calendar symbol in one event", async () => {
+			await testElementLength(".calendar .event .fa-dice", 1);
+		});
+
 		it("should show two custom icons for repeating events", async () => {
 			await testElementLength(".calendar .event .fa-undo", 2);
 		});
diff --git a/tests/mocks/calendar_test_icons.ics b/tests/mocks/calendar_test_icons.ics
index 7f24060d..41e64dea 100644
--- a/tests/mocks/calendar_test_icons.ics
+++ b/tests/mocks/calendar_test_icons.ics
@@ -53,4 +53,11 @@ RRULE:FREQ=YEARLY;BYMONTH=10;BYMONTHDAY=1
 DTEND;VALUE=DATE:20301002
 SUMMARY:TestEventRepeatDay
 END:VEVENT
-END:VCALENDAR
\ No newline at end of file
+BEGIN:VEVENT
+DTSTAMP:20200721T094531Z
+UID:20200719T094531Z-167389794@marudot.com
+DTSTART;TZID=Europe/Berlin:20301112T120000
+DTEND;TZID=Europe/Berlin:20301112T130000
+SUMMARY:TestEventCustomEventIcon
+END:VEVENT
+END:VCALENDAR