diff --git a/src/im_mad/remotes/kvm-probes.d/machines-models.rb b/src/im_mad/remotes/kvm-probes.d/machines-models.rb
index a36e3a6643..ad559b565f 100755
--- a/src/im_mad/remotes/kvm-probes.d/machines-models.rb
+++ b/src/im_mad/remotes/kvm-probes.d/machines-models.rb
@@ -30,14 +30,9 @@ begin
     machines = []
     models   = []
 
-    Open3.popen3("virsh -r -c qemu:///system capabilities") {|i, o, e, t|
-        if t.value.exitstatus != 0
-            exit -1
-        end
-
-        capabilities = o.read
-    }
-
+    cmd = 'virsh -r -c qemu:///system capabilities'
+    capabilities, e, s = Open3.capture3(cmd)
+    exit(-1) unless s.success?
 
     cap_xml = REXML::Document.new(capabilities)
     cap_xml = cap_xml.root
@@ -94,12 +89,9 @@ begin
             end
         }
 
-        cpu_models = ""
-        Open3.popen3("virsh -r -c qemu:///system cpu-models #{a}") {|i, o, e, t|
-            break if t.value.exitstatus != 0
-
-            cpu_models = o.read
-        }
+        cmd = "virsh -r -c qemu:///system cpu-models #{a}"
+        cpu_models, e, s = Open3.capture3(cmd)
+        break unless s.success?
 
         cpu_models.each_line { |l|
             l.chomp!