diff --git a/Manual.org b/Manual.org
index aa86c84..d1b71fc 100644
--- a/Manual.org
+++ b/Manual.org
@@ -560,15 +560,15 @@ APT::Install-Suggests "0";
 
 - name: set variable nvidia_detected
   set_fact:
-     nvidia_detected: 'true if {{ gpus | selectattr("VendorName", "equalto", "nvidia") | list }} else false'
+     nvidia_detected: '{{ gpus | selectattr("VendorName", "equalto", "nvidia") | list | bool }}'
 
 - name: set variable intel_detected
   set_fact:
-     intel_detected: 'true if {{ gpus | selectattr("VendorName", "equalto", "intel") | list }} else false'
+     intel_detected: '{{ gpus | selectattr("VendorName", "equalto", "intel") | list | bool }}'
 
 - name: set variable amd_detected
   set_fact:
-     amd_detected: 'true if {{ gpus | selectattr("VendorName", "equalto", "amd") | list }} else false'
+     amd_detected: '{{ gpus | selectattr("VendorName", "equalto", "amd") | list | bool }}'
 
 - debug:
     var: '{{ item }}'
diff --git a/roles/collect-facts/tasks/main.yml b/roles/collect-facts/tasks/main.yml
index b1e6e7d..085e2f4 100644
--- a/roles/collect-facts/tasks/main.yml
+++ b/roles/collect-facts/tasks/main.yml
@@ -8,15 +8,15 @@
 
 - name: set variable nvidia_detected
   set_fact:
-     nvidia_detected: 'true if {{ gpus | selectattr("VendorName", "equalto", "nvidia") | list }} else false'
+     nvidia_detected: '{{ gpus | selectattr("VendorName", "equalto", "nvidia") | list | bool }}'
 
 - name: set variable intel_detected
   set_fact:
-     intel_detected: 'true if {{ gpus | selectattr("VendorName", "equalto", "intel") | list }} else false'
+     intel_detected: '{{ gpus | selectattr("VendorName", "equalto", "intel") | list | bool }}'
 
 - name: set variable amd_detected
   set_fact:
-     amd_detected: 'true if {{ gpus | selectattr("VendorName", "equalto", "amd") | list }} else false'
+     amd_detected: '{{ gpus | selectattr("VendorName", "equalto", "amd") | list | bool }}'
 
 - debug:
     var: '{{ item }}'