diff --git a/src/controller/model_utils/signal_reducer.rs b/src/controller/model_utils/signal_reducer.rs
index e7faab6..032fb19 100644
--- a/src/controller/model_utils/signal_reducer.rs
+++ b/src/controller/model_utils/signal_reducer.rs
@@ -1,5 +1,5 @@
 pub fn reactive_resistance_of_capacitor(Cm: f64, L: f64, f: f64) -> f64 {
-    1f64 / (2f64 * 3.14f64 * f * Cm * L)
+    1f64 / (2f64 * std::f64::consts::PI * f * Cm * L)
 }
 
 pub fn full_resistance_of_capacitor(Xc: f64, Rs: f64, Rm: f64, L: f64) -> f64 {