diff --git a/dev/api/pci.rst b/dev/api/pci.rst
index cd21c41..6a8ec2b 100644
--- a/dev/api/pci.rst
+++ b/dev/api/pci.rst
@@ -319,7 +319,7 @@ The ``func`` parameter passed to a device's configuration space read/write callb
 
             /* Reset PCI configuration registers. */
             memset(dev->pci_regs[0], 0, sizeof(dev->pci_regs[0]));
-            memset(dev->pci_regs[0], 0, sizeof(dev->pci_regs[0]));
+            memset(dev->pci_regs[1], 0, sizeof(dev->pci_regs[1]));
 
             /* Write default vendor IDs, device IDs, etc. */