Index: head/sys/dev/sfxge/sfxge_port.c
===================================================================
--- head/sys/dev/sfxge/sfxge_port.c
+++ head/sys/dev/sfxge/sfxge_port.c
@@ -896,7 +896,6 @@
 	case EFX_LINK_40000FDX:
 		return (EFX_PHY_CAP_40000FDX);
 	default:
-		EFSYS_ASSERT(B_FALSE);
 		return (EFX_PHY_CAP_INVALID);
 	}
 }