diff --git a/mission/controller/acs/Guidance.cpp b/mission/controller/acs/Guidance.cpp
index d7e8fe26..185158d5 100644
--- a/mission/controller/acs/Guidance.cpp
+++ b/mission/controller/acs/Guidance.cpp
@@ -453,10 +453,10 @@ void Guidance::targetRotationRate(const int8_t timeElapsedMax, const double time
   if (VectorOperations<double>::norm(quatIXprev, 4) == 0) {
     std::memcpy(quatIXprev, quatIX, sizeof(quatIXprev));
   }
-  if (not timeDelta != 0.0) {
+  if (timeDelta != 0.0) {
     QuaternionOperations::rotationFromQuaternions(quatIX, quatIXprev, timeDelta, refSatRate);
   } else {
-    std::memcpy(refSatRate, ZERO_VEC3, sizeof(refSatRate));
+    std::memcpy(refSatRate, ZERO_VEC3, 3 * sizeof(double));
   }
   std::memcpy(quatIXprev, quatIX, sizeof(quatIXprev));
 }