diff --git a/liteeth/mac/__init__.py b/liteeth/mac/__init__.py
index 0024a5839..7fd7af69a 100644
--- a/liteeth/mac/__init__.py
+++ b/liteeth/mac/__init__.py
@@ -3,20 +3,20 @@ from liteeth.mac.core import LiteEthMACCore
 from liteeth.mac.frontend import wishbone
 
 class LiteEthMAC(Module, AutoCSR):
-	def __init__(self, phy, dw, interface="wishbone", endianness="be",
+	def __init__(self, phy, dw, interface="core", endianness="be",
 			with_hw_preamble_crc=True):
 		self.submodules.core = LiteEthMACCore(phy, dw, endianness, with_hw_preamble_crc)
 		self.csrs = None
-		if interface == "wishbone":
+		if interface == "core":
+			self.sink, self.source = self.core.sink, self.core.source
+		elif interface == "wishbone":
 			self.interface = wishbone.LiteEthMACWishboneInterface(dw, 2, 2)
 			self.ev, self.bus = self.interface.sram.ev, self.interface.bus
 			self.csrs = self.interface.get_csrs()
 		elif interface == "dma":
 			raise NotImplementedError
-		elif interface == "core":
-			self.sink, self.source = self.core.sink, self.core.source
 		else:
-			raise ValueError("EthMAC only supports Wishbone, DMA or core interfaces")
+			raise ValueError(inteface + " not supported by LiteEthMac!")
 
 	def get_csrs(self):
 		return self.csrs