diff --git a/glances/plugins/vms/engines/multipass.py b/glances/plugins/vms/engines/multipass.py
index 16a2f412..6eb9db24 100644
--- a/glances/plugins/vms/engines/multipass.py
+++ b/glances/plugins/vms/engines/multipass.py
@@ -22,7 +22,7 @@ from glances.secure import secure_popen
 MULTIPASS_PATH = '/snap/bin/multipass'
 MULTIPASS_VERSION_OPTIONS = 'version --format json'
 MULTIPASS_INFO_OPTIONS = 'info --format json'
-import_multipass_error_tag = not os.path.exists(MULTIPASS_PATH) and os.access(MULTIPASS_PATH, os.X_OK)
+import_multipass_error_tag = not os.path.exists(MULTIPASS_PATH) or not os.access(MULTIPASS_PATH, os.X_OK)
 
 
 class VmExtension(VmsExtension):
diff --git a/glances/plugins/vms/engines/virsh.py b/glances/plugins/vms/engines/virsh.py
index 920510ee..c86248eb 100644
--- a/glances/plugins/vms/engines/virsh.py
+++ b/glances/plugins/vms/engines/virsh.py
@@ -24,7 +24,7 @@ VIRSH_VERSION_OPTIONS = 'version'
 VIRSH_INFO_OPTIONS = 'list --all'
 VIRSH_DOMAIN_STATS_OPTIONS = 'domstats'
 VIRSH_DOMAIN_TITLE_OPTIONS = 'desc --title'
-import_virsh_error_tag = not os.path.exists(VIRSH_PATH) and os.access(VIRSH_PATH, os.X_OK)
+import_virsh_error_tag = not os.path.exists(VIRSH_PATH) or not os.access(VIRSH_PATH, os.X_OK)
 
 
 class VmExtension(VmsExtension):