diff --git a/frontend/components/projects/edit/organisations/index.tsx b/frontend/components/projects/edit/organisations/index.tsx
index 91ab12746..4002ebca8 100644
--- a/frontend/components/projects/edit/organisations/index.tsx
+++ b/frontend/components/projects/edit/organisations/index.tsx
@@ -34,6 +34,7 @@ import useProjectContext from '../useProjectContext'
 import useParticipatingOrganisations from './useParticipatingOrganisations'
 import {cfgOrganisations as config} from './config'
 import ProjectCategoriesDialog from './ProjectCategoriesDialog'
+import {removeOrganisationCategoriesFromProject} from './apiProjectOrganisations'
 
 export default function ProjectOrganisations() {
   const {token,user} = useSession()
@@ -190,6 +191,9 @@ export default function ProjectOrganisations() {
     const organisation = organisations[pos]
     // if it has id
     if (organisation?.id) {
+      // remove categories from project - do not wait for result
+      removeOrganisationCategoriesFromProject(project.id,organisation.id,token)
+      // remove organisation from project
       const resp = await deleteOrganisationFromProject({
         project: project.id,
         organisation: organisation.id,
diff --git a/frontend/components/software/edit/organisations/index.tsx b/frontend/components/software/edit/organisations/index.tsx
index 7ce5db665..6d35f93e2 100644
--- a/frontend/components/software/edit/organisations/index.tsx
+++ b/frontend/components/software/edit/organisations/index.tsx
@@ -40,6 +40,7 @@ import {
   deleteOrganisationFromSoftware, patchOrganisationPositions
 } from './organisationForSoftware'
 import SoftwareCategoriesDialog from './SoftwareCategoriesDialog'
+import {removeOrganisationCategoriesFromSoftware} from './apiSoftwareOrganisations'
 
 export type OrganisationModalStates<T> = ModalStates<T> & {
   categories: T
@@ -211,9 +212,12 @@ export default function SoftwareOrganisations() {
     // get organisation
     const organisation = organisations[pos]
     // if it has id
-    if (organisation?.id) {
+    if (organisation?.id && software?.id) {
+      // remove categories from software - do not wait for result
+      removeOrganisationCategoriesFromSoftware(software?.id, organisation.id, token)
+      // remove organisation from software
       const resp = await deleteOrganisationFromSoftware({
-        software: software?.id ?? undefined,
+        software: software?.id,
         organisation: organisation.id,
         token
       })