diff --git a/hw/alpha/pci.c b/hw/alpha/pci.c
index d839dd556a5b0933d59aefea12d9999a87f45baa..5226e43b96ebc0dcc77f9c35bcdaa123c372845a 100644
--- a/hw/alpha/pci.c
+++ b/hw/alpha/pci.c
@@ -10,6 +10,7 @@
 #include "alpha_sys.h"
 #include "qemu/log.h"
 #include "sysemu/sysemu.h"
+#include "trace.h"
 
 
 /* Fallback for unassigned PCI I/O operations.  Avoids MCHK.  */
@@ -73,7 +74,7 @@ static uint64_t iack_read(void *opaque, hwaddr addr, unsigned size)
 static void special_write(void *opaque, hwaddr addr,
                           uint64_t val, unsigned size)
 {
-    qemu_log("pci: special write cycle");
+    trace_alpha_pci_iack_write();
 }
 
 const MemoryRegionOps alpha_pci_iack_ops = {
diff --git a/trace-events b/trace-events
index 55f5b9ed2cd4f2d8f459e821116e8a24390874df..49f4523c0fecb7e98040385228145465c9dd3cb2 100644
--- a/trace-events
+++ b/trace-events
@@ -1758,6 +1758,9 @@ cpu_unhalt(int cpu_index) "unhalting cpu %d"
 # hw/arm/virt-acpi-build.c
 virt_acpi_setup(void) "No fw cfg or ACPI disabled. Bailing out."
 
+# hw/alpha/pci.c
+alpha_pci_iack_write(void) ""
+
 # audio/alsaaudio.c
 alsa_revents(int revents) "revents = %d"
 alsa_pollout(int i, int fd) "i = %d fd = %d"