diff --git a/src/test/test_driver.c b/src/test/test_driver.c
index ce4ff1a582..2371581f51 100644
--- a/src/test/test_driver.c
+++ b/src/test/test_driver.c
@@ -3275,7 +3275,7 @@ static int testDomainGetDiskErrors(virDomainPtr dom,
     virDomainObjPtr vm = NULL;
     int ret = -1;
     size_t i;
-    size_t nerrors;
+    size_t nerrors = 0;
 
     virCheckFlags(0, -1);