Index: firmware/App/Controllers/SyringePump.c
===================================================================
diff -u -r943c6072dae3678dbba29f9b63035d44139ea1cf -reb8477e165e028478922b8c7dd9bdd2564b90525
--- firmware/App/Controllers/SyringePump.c	(.../SyringePump.c)	(revision 943c6072dae3678dbba29f9b63035d44139ea1cf)
+++ firmware/App/Controllers/SyringePump.c	(.../SyringePump.c)	(revision eb8477e165e028478922b8c7dd9bdd2564b90525)
@@ -1113,7 +1113,7 @@
     syringePumpPosition.data = encPosition - syringePumpHomePositionOffset;
     // Calculate volume delivered from position
     syringePumpVolumeDelivered.data = (F32)( syringePumpPosition.data - syringePumpVolumeStartPosition ) / SYRINGE_ENCODER_COUNTS_PER_ML;
-    syringePumpVolumeDelivered.data = ( syringePumpVolumeDelivered.data < 0.0F ? 0.0F : syringePumpVolumeDelivered.data );
+    syringePumpVolumeDelivered.data = MAX( syringePumpVolumeDelivered.data, 0.0F );
     calcSafetyVolumeDelivered();
     // Calculate measured rate (mL/hr)
     calcMeasRate();