diff --git a/hw/pci/pcie_sriov.c b/hw/pci/pcie_sriov.c
index a1fe65f5d8..da209b7f47 100644
--- a/hw/pci/pcie_sriov.c
+++ b/hw/pci/pcie_sriov.c
@@ -176,6 +176,9 @@ static void register_vfs(PCIDevice *dev)
 
     assert(sriov_cap > 0);
     num_vfs = pci_get_word(dev->config + sriov_cap + PCI_SRIOV_NUM_VF);
+    if (num_vfs > pci_get_word(dev->config + sriov_cap + PCI_SRIOV_TOTAL_VF)) {
+        return;
+    }
 
     dev->exp.sriov_pf.vf = g_new(PCIDevice *, num_vfs);