diff --git a/src/gateware/cxp_upconn.py b/src/gateware/cxp_upconn.py
index 88b7171..2359415 100644
--- a/src/gateware/cxp_upconn.py
+++ b/src/gateware/cxp_upconn.py
@@ -56,7 +56,7 @@ class CXP_UpConn(Module, AutoCSR):
 
 
         o = Signal()
-        bits = Signal(max=tx_width)
+        tx_bitcount = Signal(max=tx_width)
         tx_reg = Signal(tx_width)
 
         self.submodules.encoder = SingleEncoder(True)
@@ -72,10 +72,10 @@ class CXP_UpConn(Module, AutoCSR):
                 o.eq(tx_reg[0]),
                 tx_reg.eq(Cat(tx_reg[1:], 0))
             ),
-            If(bits != tx_width - 1,
-                bits.eq(bits + 1),   
+            If(tx_bitcount != tx_width - 1,
+                tx_bitcount.eq(tx_bitcount + 1),   
             ).Elif(self.stb.storage,
-                bits.eq(0),
+                tx_bitcount.eq(0),
                 tx_reg.eq(self.encoder.output),
                 self.tx_reg.status.eq(self.encoder.output),
                 self.encoder.disp_in.eq(self.encoder.disp_out),