diff --git a/src/idl/nanopb/measurements.proto b/src/idl/nanopb/measurements.proto
index 27ca7edb..34c967f6 100644
--- a/src/idl/nanopb/measurements.proto
+++ b/src/idl/nanopb/measurements.proto
@@ -62,7 +62,7 @@ message MeasurementSet {
   }
   enum Type { /// types of measurement samples we can take. minor changes to SI units to encode efficiently
     UnknownEvent = 0; /// Protocol Buffers uses the first enum as the default
-    TimeMS = 1; /// more percise time, in milliseconds
+    TimeMS = 1; /// more precise time, in milliseconds
     VMC = 2; /// Vector Magnitude Counts. Rough measure of total activity. Unitless
     Steps = 3; /// Accumulated steps. Unitless
     DistanceCM = 4; /// Distance traveled. In centimeters