diff --git a/quad/doc/zybo_pinout_assignments.md b/quad/doc/zybo_pinout_assignments.md
index 66b749749f57ac74a2c71aa4ace2be9b128f1337..c2bdae857218bdbae5dc933b1553161554ce533a 100644
--- a/quad/doc/zybo_pinout_assignments.md
+++ b/quad/doc/zybo_pinout_assignments.md
@@ -40,8 +40,8 @@ JC2  : W15 : IO_L10N_T1_34 : processing_system7_0_UART0_TX_pin
 JC3  : T11 : IO_L1P_T0_34  : processing_system7_0_UART0_RX_pin
 JC4  : T10 : IO_L1N_T0_34  : unused
 JC7  : W14 : IO_L8P_T1_34  : unused
-JC8  : Y14 : IO_L8N_T1_34  : unused
-JC9  : T12 : IO_L2P_T0_34  : unused
+JC8  : Y14 : IO_L8N_T1_34  : processing_system7_0_UART1_TX_pin
+JC9  : T12 : IO_L2P_T0_34  : processing_system7_0_UART1_RX_pin
 JC10 : U12 : IO_L2N_T0_34  : unused
 
 JB1  : T20 : IO_L15P_T2_DQS_34 : unused