diff --git a/pkg/models/task_relation.go b/pkg/models/task_relation.go
index 75dbfc6046..9f787405bf 100644
--- a/pkg/models/task_relation.go
+++ b/pkg/models/task_relation.go
@@ -81,9 +81,9 @@ type TaskRelation struct {
 	// The ID of the "base" task, the task which has a relation to another.
 	TaskID int64 `xorm:"bigint not null" json:"task_id" param:"task"`
 	// The ID of the other task, the task which is being related.
-	OtherTaskID int64 `xorm:"bigint not null" json:"other_task_id"`
+	OtherTaskID int64 `xorm:"bigint not null" json:"other_task_id" param:"otherTask"`
 	// The kind of the relation.
-	RelationKind RelationKind `xorm:"varchar(50) not null" json:"relation_kind"`
+	RelationKind RelationKind `xorm:"varchar(50) not null" json:"relation_kind" param:"relationKind"`
 
 	CreatedByID int64 `xorm:"bigint not null" json:"-"`
 	// The user who created this relation
@@ -196,16 +196,18 @@ func (rel *TaskRelation) Create(s *xorm.Session, a web.Auth) error {
 // @Security JWTKeyAuth
 // @Param relation body models.TaskRelation true "The relation object"
 // @Param taskID path int true "Task ID"
+// @Param relationKind path string true "The kind of the relation. See the TaskRelation type for more info."
+// @Param otherTaskID path int true "The id of the other task."
 // @Success 200 {object} models.Message "The task relation was successfully deleted."
 // @Failure 400 {object} web.HTTPError "Invalid task relation object provided."
 // @Failure 404 {object} web.HTTPError "The task relation was not found."
 // @Failure 500 {object} models.Message "Internal error"
-// @Router /tasks/{taskID}/relations [delete]
+// @Router /tasks/{taskID}/relations/{relationKind}/{otherTaskId} [delete]
 func (rel *TaskRelation) Delete(s *xorm.Session, a web.Auth) error {
 	// Check if the relation exists
 	exists, err := s.
-		Cols("task_id", "other_task_id", "relation_kind").
-		Get(rel)
+		Where("task_id = ? AND other_task_id = ? AND relation_kind = ?", rel.TaskID, rel.OtherTaskID, rel.RelationKind).
+		Exist(&TaskRelation{})
 	if err != nil {
 		return err
 	}
diff --git a/pkg/routes/routes.go b/pkg/routes/routes.go
index 3a76132a3b..63f7b28b41 100644
--- a/pkg/routes/routes.go
+++ b/pkg/routes/routes.go
@@ -392,7 +392,7 @@ func registerAPIRoutes(a *echo.Group) {
 		},
 	}
 	a.PUT("/tasks/:task/relations", taskRelationHandler.CreateWeb)
-	a.DELETE("/tasks/:task/relations", taskRelationHandler.DeleteWeb)
+	a.DELETE("/tasks/:task/relations/:relationKind/:otherTask", taskRelationHandler.DeleteWeb)
 
 	if config.ServiceEnableTaskAttachments.GetBool() {
 		taskAttachmentHandler := &handler.WebHandler{
diff --git a/pkg/swagger/docs.go b/pkg/swagger/docs.go
index 193215a060..177120579a 100644
--- a/pkg/swagger/docs.go
+++ b/pkg/swagger/docs.go
@@ -5313,7 +5313,9 @@ var doc = `{
                         }
                     }
                 }
-            },
+            }
+        },
+        "/tasks/{taskID}/relations/{relationKind}/{otherTaskId}": {
             "delete": {
                 "security": [
                     {
@@ -5346,6 +5348,20 @@ var doc = `{
                         "name": "taskID",
                         "in": "path",
                         "required": true
+                    },
+                    {
+                        "type": "string",
+                        "description": "The kind of the relation. See the TaskRelation type for more info.",
+                        "name": "relationKind",
+                        "in": "path",
+                        "required": true
+                    },
+                    {
+                        "type": "integer",
+                        "description": "The id of the other task.",
+                        "name": "otherTaskID",
+                        "in": "path",
+                        "required": true
                     }
                 ],
                 "responses": {
diff --git a/pkg/swagger/swagger.json b/pkg/swagger/swagger.json
index 5aa7740281..6ac22ecc1f 100644
--- a/pkg/swagger/swagger.json
+++ b/pkg/swagger/swagger.json
@@ -5296,7 +5296,9 @@
                         }
                     }
                 }
-            },
+            }
+        },
+        "/tasks/{taskID}/relations/{relationKind}/{otherTaskId}": {
             "delete": {
                 "security": [
                     {
@@ -5329,6 +5331,20 @@
                         "name": "taskID",
                         "in": "path",
                         "required": true
+                    },
+                    {
+                        "type": "string",
+                        "description": "The kind of the relation. See the TaskRelation type for more info.",
+                        "name": "relationKind",
+                        "in": "path",
+                        "required": true
+                    },
+                    {
+                        "type": "integer",
+                        "description": "The id of the other task.",
+                        "name": "otherTaskID",
+                        "in": "path",
+                        "required": true
                     }
                 ],
                 "responses": {
diff --git a/pkg/swagger/swagger.yaml b/pkg/swagger/swagger.yaml
index 959c2a61ab..98bf1b8276 100644
--- a/pkg/swagger/swagger.yaml
+++ b/pkg/swagger/swagger.yaml
@@ -4542,45 +4542,6 @@ paths:
       tags:
       - labels
   /tasks/{taskID}/relations:
-    delete:
-      consumes:
-      - application/json
-      parameters:
-      - description: The relation object
-        in: body
-        name: relation
-        required: true
-        schema:
-          $ref: '#/definitions/models.TaskRelation'
-      - description: Task ID
-        in: path
-        name: taskID
-        required: true
-        type: integer
-      produces:
-      - application/json
-      responses:
-        "200":
-          description: The task relation was successfully deleted.
-          schema:
-            $ref: '#/definitions/models.Message'
-        "400":
-          description: Invalid task relation object provided.
-          schema:
-            $ref: '#/definitions/web.HTTPError'
-        "404":
-          description: The task relation was not found.
-          schema:
-            $ref: '#/definitions/web.HTTPError'
-        "500":
-          description: Internal error
-          schema:
-            $ref: '#/definitions/models.Message'
-      security:
-      - JWTKeyAuth: []
-      summary: Remove a task relation
-      tags:
-      - task
     put:
       consumes:
       - application/json
@@ -4617,6 +4578,56 @@ paths:
       summary: Create a new relation between two tasks
       tags:
       - task
+  /tasks/{taskID}/relations/{relationKind}/{otherTaskId}:
+    delete:
+      consumes:
+      - application/json
+      parameters:
+      - description: The relation object
+        in: body
+        name: relation
+        required: true
+        schema:
+          $ref: '#/definitions/models.TaskRelation'
+      - description: Task ID
+        in: path
+        name: taskID
+        required: true
+        type: integer
+      - description: The kind of the relation. See the TaskRelation type for more info.
+        in: path
+        name: relationKind
+        required: true
+        type: string
+      - description: The id of the other task.
+        in: path
+        name: otherTaskID
+        required: true
+        type: integer
+      produces:
+      - application/json
+      responses:
+        "200":
+          description: The task relation was successfully deleted.
+          schema:
+            $ref: '#/definitions/models.Message'
+        "400":
+          description: Invalid task relation object provided.
+          schema:
+            $ref: '#/definitions/web.HTTPError'
+        "404":
+          description: The task relation was not found.
+          schema:
+            $ref: '#/definitions/web.HTTPError'
+        "500":
+          description: Internal error
+          schema:
+            $ref: '#/definitions/models.Message'
+      security:
+      - JWTKeyAuth: []
+      summary: Remove a task relation
+      tags:
+      - task
   /tasks/all:
     get:
       consumes: