diff --git a/tasks/configure.yml b/tasks/configure.yml
index 8de8681..5a7d5e3 100644
--- a/tasks/configure.yml
+++ b/tasks/configure.yml
@@ -18,9 +18,15 @@
     - where_result.stdout == ""
     - which_result.stdout == ""
 
-- name: Set command for opendkim-genkey
+- name: Set command for opendkim-genkey (using which)
   set_fact:
     opendkim_genkey_cmd: "{{ which_result.stdout }}"
+  when: which_result.stdout != ''
+
+- name: Set command for opendkim-genkey (using where)
+  set_fact:
+    opendkim_genkey_cmd: "{{ where_result.stdout }}"
+  when: where_result.stdout != ''
 
 - name: Generate DKIM keys
   shell: "{{opendkim_genkey_cmd }} -D /etc/dkimkeys --domain={{ item }} --selector={{ item }}"