diff --git a/hw/pci.c b/hw/pci.c
index 49651d0..9fd2c38 100644
--- a/hw/pci.c
+++ b/hw/pci.c
@@ -29,7 +29,7 @@
 
 //#define DEBUG_PCI
 #ifdef DEBUG_PCI
-# define PCI_DPRINTF(format, ...)       printf(format, __VA_ARGS__)
+# define PCI_DPRINTF(format, ...)       printf(format, ## __VA_ARGS__)
 #else
 # define PCI_DPRINTF(format, ...)       do { } while (0)
 #endif