diff --git a/sys/dev/e1000/if_em.h b/sys/dev/e1000/if_em.h
index 7219dc57c33..83a0d4e96fc 100644
--- a/sys/dev/e1000/if_em.h
+++ b/sys/dev/e1000/if_em.h
@@ -251,8 +251,7 @@
 #define IGB_ITR_DIVIDEND	1000000
 #define IGB_ITR_SHIFT		2
 #define IGB_QVECTOR_MASK	0x7FFC
-#define IGB_INTS_TO_EITR(i)	(((IGB_ITR_DIVIDEND/i) & IGB_QVECTOR_MASK) << \
-				    IGB_ITR_SHIFT)
+#define IGB_INTS_TO_EITR(i)	((IGB_ITR_DIVIDEND/i) & IGB_QVECTOR_MASK)
 
 #define IGB_LINK_ITR		2000
 #define I210_LINK_DELAY		1000