diff --git a/examples/keygen/external_import.c b/examples/keygen/external_import.c
index d46d9bba..885606f8 100644
--- a/examples/keygen/external_import.c
+++ b/examples/keygen/external_import.c
@@ -127,6 +127,7 @@ int TPM2_ExternalImport_Example(void* userCtx, int argc, char *argv[])
         argc--;
     }
 
+    XMEMSET(&dev, 0, sizeof(dev));
     XMEMSET(&storage, 0, sizeof(storage));
     primary = &storage;