diff --git a/src/main/java/io/redlink/more/data/controller/CalendarApiV1Controller.java b/src/main/java/io/redlink/more/data/controller/CalendarApiV1Controller.java
deleted file mode 100644
index 94c4820..0000000
--- a/src/main/java/io/redlink/more/data/controller/CalendarApiV1Controller.java
+++ /dev/null
@@ -1,28 +0,0 @@
-package io.redlink.more.data.controller;
-
-import io.redlink.more.data.api.app.v1.webservices.CalendarApi;
-import io.redlink.more.data.service.CalendarService;
-import org.springframework.http.MediaType;
-import org.springframework.http.ResponseEntity;
-import org.springframework.stereotype.Controller;
-import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RestController;
-
-@Controller
-@RestController
-@RequestMapping(value = "/api/v1", produces = MediaType.APPLICATION_JSON_VALUE)
-public class CalendarApiV1Controller implements CalendarApi {
-
-    private final CalendarService calendarService;
-
-    public CalendarApiV1Controller(CalendarService calendarService) {
-        this.calendarService = calendarService;
-    }
-
-    @Override
-    public ResponseEntity<String> getStudyCalendar(Long studyId) {
-        return ResponseEntity.of(
-                this.calendarService.getICalendarString(studyId)
-        );
-    }
-}
diff --git a/src/main/resources/openapi/ExternalAPI.yaml b/src/main/resources/openapi/ExternalAPI.yaml
index edd8049..b063dfa 100644
--- a/src/main/resources/openapi/ExternalAPI.yaml
+++ b/src/main/resources/openapi/ExternalAPI.yaml
@@ -97,24 +97,6 @@ paths:
         '401':
           $ref: '#/components/responses/UnauthorizedApiKey'
 
-  /calendar/studies/{studyId}/calendar.ics:
-    get:
-      tags:
-        - calendar
-      description: Get study calendar for study as iCal
-      operationId: getStudyCalendar
-      parameters:
-        - $ref: '#/components/parameters/StudyId'
-      responses:
-        '200':
-          description: Successfully returned study calendar
-          content:
-            text/calendar:
-              schema:
-                type: string
-        '404':
-          description: Not found
-
 components:
   schemas:
     EndpointDataBulk: