diff --git a/roles/backup_client/tasks/main.yml b/roles/backup_client/tasks/main.yml
index b01cff9512f01a6dc81c4e2efc31ceeca0b0b4e9..57abda0611a3bb17e1053604ddac7594824d7251 100644
--- a/roles/backup_client/tasks/main.yml
+++ b/roles/backup_client/tasks/main.yml
@@ -53,14 +53,14 @@
     - Import public keys
 
 - name: Extract encryption key identifier (Duplicty requires key ID in hexadecimal format)
-  shell: "{{ gnupg_binary }} --list-packets /etc/duply/main/private_keys.asc | grep keyid: |
+  shell: "{{ gnupg_binary }} --no-tty --list-packets /etc/duply/main/private_keys.asc | grep keyid: |
     head -n1 | sed -e 's/.*: //' | sed -re 's/^.{{ '{' + gnupg_key_cutoff + '}' }}//'"
   register: backup_encryption_key_id
   changed_when: false
   failed_when: backup_encryption_key_id.stdout == ""
 
 - name: Extract additional encryption keys identifiers (Duplicty requires key ID in hexadecimal format)
-  shell: "{{ gnupg_binary }} --list-packets /etc/duply/main/public_keys.asc | grep keyid: |
+  shell: "{{ gnupg_binary }} --no-tty --list-packets /etc/duply/main/public_keys.asc | grep keyid: |
     sed -e 's/.*: //' | sort -u | sed -re 's/^.{{ '{' + gnupg_key_cutoff + '}' }}//' | tr '\n' ',' | sed -e 's/,$//'"
   when: backup_additional_encryption_keys
   register: backup_additional_encryption_keys_ids