diff --git a/liteeth/frontend/etherbone.py b/liteeth/frontend/etherbone.py
index 7f08687..47568eb 100644
--- a/liteeth/frontend/etherbone.py
+++ b/liteeth/frontend/etherbone.py
@@ -323,7 +323,7 @@ class LiteEthEtherboneRecord(Module):
             sink.connect(depacketizer.sink),
             depacketizer.source.connect(receiver.sink)
         ]
-        if endianness is "big":
+        if endianness == "big":
             self.comb += receiver.sink.data.eq(reverse_bytes(depacketizer.source.data))
 
         # Save last ip address
@@ -347,7 +347,7 @@ class LiteEthEtherboneRecord(Module):
                 (sender.source.rcount != 0)*4 + sender.source.rcount*4),
             source.ip_address.eq(last_ip_address)
         ]
-        if endianness is "big":
+        if endianness == "big":
             self.comb += packetizer.sink.data.eq(reverse_bytes(sender.source.data))
 
 # Etherbone Wishbone Master ------------------------------------------------------------------------