diff --git a/radio/src/mixer.cpp b/radio/src/mixer.cpp
index 4167ca2a4..f27320c5e 100644
--- a/radio/src/mixer.cpp
+++ b/radio/src/mixer.cpp
@@ -158,7 +158,7 @@ int16_t applyLimits(uint8_t channel, int32_t value)
 {
   LimitData * lim = limitAddress(channel);
 
-#if defined(PCBTARANIS) && defined(CURVES)
+#if defined(CPUARM) && defined(CURVES)
   if (lim->curve) {
     // TODO we loose precision here, applyCustomCurve could work with int32_t on ARM boards...
     if (lim->curve > 0)