diff --git a/measure.c b/measure.c
index c54135e..25681cc 100644
--- a/measure.c
+++ b/measure.c
@@ -55,9 +55,9 @@ void measureCollectAndProcessConversion() {
     } else if (nAvg == N_MAX) {
       r = FLT_MAX;
     } else {
-      r = R_REF / ((((float)N_MAX) / ((float)nAvg)) - 1.0);
+      r = ((((float)N_MAX) / ((float)nAvg)) - 1.0) * R_REF;
     }
-    float t = (r / PT1000_R0 - 1) / PT1000_Coeff;
+    float t = ((r / PT1000_R0) - 1) / PT1000_Coeff;
 
     uint8_t temperature = (t < 0) ? 0 : ((uint8_t)t);