diff --git a/roles/postfix/tasks/main.yml b/roles/postfix/tasks/main.yml
index b00f916..096beb9 100644
--- a/roles/postfix/tasks/main.yml
+++ b/roles/postfix/tasks/main.yml
@@ -1,3 +1,8 @@
+- name: load architecture-specific values
+  include_vars: '{{ item }}'
+  with_first_found:
+  - '{{ ansible_architecture }}.yml'
+  - default-architecture.yml
 - name: load distribution-specifc values
   include_vars: '{{ item }}'
   with_first_found:
diff --git a/roles/postfix/vars/default-architecture.yml b/roles/postfix/vars/default-architecture.yml
new file mode 100644
index 0000000..d2596cd
--- /dev/null
+++ b/roles/postfix/vars/default-architecture.yml
@@ -0,0 +1 @@
+arch_libdir: lib
diff --git a/roles/postfix/vars/defaults.yml b/roles/postfix/vars/defaults.yml
index d4b08ee..7a18cdd 100644
--- a/roles/postfix/vars/defaults.yml
+++ b/roles/postfix/vars/defaults.yml
@@ -5,4 +5,4 @@ postfix_compatibility_level: 2
 postfix_sample_directory: /usr/share/doc/postfix/samples
 postfix_readme_directory: /usr/share/doc/postfix/README_FILES
 postfix_meta_directory: /etc/postfix
-postfix_shlib_directory: /usr/lib/postfix
+postfix_shlib_directory: /usr/{{ arch_libdir }}/postfix
diff --git a/roles/postfix/vars/x86_64.yml b/roles/postfix/vars/x86_64.yml
new file mode 100644
index 0000000..0488991
--- /dev/null
+++ b/roles/postfix/vars/x86_64.yml
@@ -0,0 +1 @@
+arch_libdir: lib64