diff --git a/roles/copr/backend/tasks/main.yml b/roles/copr/backend/tasks/main.yml
index ed095319a7..23041309a1 100644
--- a/roles/copr/backend/tasks/main.yml
+++ b/roles/copr/backend/tasks/main.yml
@@ -201,7 +201,7 @@
   - provision_config
 
 - name: calculate max number of workers
-  set_fact: "max_workers={{ max_x86_64_workers|int + max_aarch64_workers|int }}"
+  set_fact: "max_workers={{ max_x86_64_workers|int + max_aarch64_workers|int + max_ppc64le_workers|int + max_s390x_workers|int }}"
   tags:
   - provision_config
 
diff --git a/roles/copr/backend/templates/copr-be.conf.j2 b/roles/copr/backend/templates/copr-be.conf.j2
index fa327296c9..4db1b4901e 100644
--- a/roles/copr/backend/templates/copr-be.conf.j2
+++ b/roles/copr/backend/templates/copr-be.conf.j2
@@ -48,10 +48,10 @@ builds_max_workers_arch=
     x86_64={{ max_x86_64_workers }},
     aarch64={{ max_aarch64_workers }},
     s390x={{ max_s390x_workers }},
-    armhfp={{ (max_x86_64_workers|int / 4)|int }},
-    i386={{ (max_x86_64_workers|int / 4)|int }},
+    armhfp={{ (max_x86_64_workers|int / 5)|int }},
+    i386={{ (max_x86_64_workers|int / 5)|int }},
     i586={{ (max_x86_64_workers|int / 4)|int }},
-    i686={{ (max_x86_64_workers|int / 4)|int }},
+    i686={{ (max_x86_64_workers|int / 5)|int }},
     ppc64le={{ max_ppc64le_workers }}
 
 # Maximum number of concurrently running tasks per project owner.