diff --git a/.circleci/config.yml b/.circleci/config.yml
index 8e0723b49..b2956ac25 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -15,7 +15,7 @@ jobs:
       - run:
           working_directory: ~/gvm-libs
           name: Checkout gvm-libs
-          command: git clone --depth 1 https://github.com/greenbone/gvm-libs.git
+          command: git clone --depth 1 https://github.com/greenbone/gvm-libs.git -b gvm-libs-20.08
       - run:
           working_directory: ~/gvm-libs
           name: Configure and compile gvm-libs (Release)
@@ -31,7 +31,7 @@ jobs:
       - run:
           working_directory: ~/gvm-libs
           name: Checkout gvm-libs
-          command: git clone --depth 1 https://github.com/greenbone/gvm-libs.git
+          command: git clone --depth 1 https://github.com/greenbone/gvm-libs.git -b gvm-libs-20.08
       - run:
           working_directory: ~/gvm-libs
           name: Configure and compile gvm-libs
@@ -47,7 +47,7 @@ jobs:
       - run:
           working_directory: ~/gvm-libs
           name: Checkout gvm-libs
-          command: git clone --depth 1 https://github.com/greenbone/gvm-libs.git
+          command: git clone --depth 1 https://github.com/greenbone/gvm-libs.git -b gvm-libs-20.08
       - run:
           working_directory: ~/gvm-libs
           name: Configure and compile gvm-libs
diff --git a/CHANGELOG.md b/CHANGELOG.md
index d746c1375..0d9f788ae 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 ### Fixed
 - Fork vhosts before creating the socket.[#576](https://github.com/greenbone/openvas/pull/576)
 - Check if another forked child has already added the same vhost. [#581](https://github.com/greenbone/openvas/pull/581)
+- Send duplicated hosts as dead hosts to ospd, to adjust scan progress calculation. [#586](https://github.com/greenbone/openvas/pull/586)
 
 [20.08]: https://github.com/greenbone/openvas/compare/v20.8.0...openvas-20.08
 
diff --git a/src/attack.c b/src/attack.c
index 3065f45c3..7929022d9 100644
--- a/src/attack.c
+++ b/src/attack.c
@@ -996,6 +996,7 @@ attack_network (struct scan_globals *globals)
   const gchar *port_range;
   kb_t host_kb;
   GSList *unresolved;
+  int duplicated_hosts;
 
   gboolean test_alive_hosts_only = prefs_get_bool ("test_alive_hosts_only");
   gvm_hosts_t *alive_hosts_list = NULL;
@@ -1064,6 +1065,15 @@ attack_network (struct scan_globals *globals)
 
   hosts = gvm_hosts_new (hostlist);
   unresolved = gvm_hosts_resolve (hosts);
+
+  /* Duplicated hosts are removed from the list and ospd-openvas
+     needs to know that less hosts will be scanned, for the scan progress
+     calculation. Sent the amount of duplicated hosts as dead hosts to not
+     be taken in account. */
+  duplicated_hosts = gvm_hosts_duplicated (hosts);
+  if (duplicated_hosts > 0)
+    send_dead_hosts_to_ospd_openvas (duplicated_hosts);
+
   while (unresolved)
     {
       g_warning ("Couldn't resolve hostname '%s'", (char *) unresolved->data);