diff --git a/tools/pci/pcitest.c b/tools/pci/pcitest.c
index 441b54234635..470258009ddc 100644
--- a/tools/pci/pcitest.c
+++ b/tools/pci/pcitest.c
@@ -16,8 +16,6 @@
 
 #include <linux/pcitest.h>
 
-#define BILLION 1E9
-
 static char *result[] = { "NOT OKAY", "OKAY" };
 static char *irq[] = { "LEGACY", "MSI", "MSI-X" };