diff --git a/firmware/drivers/isis_antenna/isis_antenna_i2c.c b/firmware/drivers/isis_antenna/isis_antenna_i2c.c
index 92b31831..8e532af8 100644
--- a/firmware/drivers/isis_antenna/isis_antenna_i2c.c
+++ b/firmware/drivers/isis_antenna/isis_antenna_i2c.c
@@ -93,7 +93,7 @@ int isis_antenna_i2c_write(uint8_t *data, uint16_t len)
                 {
                     isis_antenna_delay_ms(1);
 
-                    if (tca4311a_disable(ants_config) == TCA4311A_NOT_READY)
+                    if (tca4311a_disable(ants_config) == TCA4311A_READY)
                     {
                         err = 0;
 
@@ -148,7 +148,7 @@ int isis_antenna_i2c_read(uint8_t *data, uint16_t len)
                 {
                     isis_antenna_delay_ms(1);
 
-                    if (tca4311a_disable(ants_config) == TCA4311A_NOT_READY)
+                    if (tca4311a_disable(ants_config) == TCA4311A_READY)
                     {
                         err = 0;