diff --git a/tools/p2a.cpp b/tools/p2a.cpp
index 6d4b693..5f9880a 100644
--- a/tools/p2a.cpp
+++ b/tools/p2a.cpp
@@ -27,6 +27,7 @@
     PciDevice result;
     PciUtilImpl pci;
     PciFilter filter;
+    bool found = false;
 
     filter.vid = aspeedVendorId;
     filter.did = aspeedDeviceId;
@@ -46,7 +47,15 @@
         }
 
         result = d;
+        found = true;
+        break;
     }
+
+    if (!found)
+    {
+        return false;
+    }
+
     std::fprintf(stderr, "\n");
 
     /* We sent the open command before this, so the window should be open and