diff --git a/NanoVNASaver/Analysis.py b/NanoVNASaver/Analysis.py
index 57e045c..0b453e7 100644
--- a/NanoVNASaver/Analysis.py
+++ b/NanoVNASaver/Analysis.py
@@ -1030,7 +1030,7 @@ class SimplePeakSearchAnalysis(Analysis):
             suffix = ""
             data = []
             for d in self.app.data:
-                data.append(d.as_vswr())
+                data.append(d.vswr)
         elif self.rbtn_data_resistance.isChecked():
             suffix = " \N{OHM SIGN}"
             data = []
@@ -1134,7 +1134,7 @@ class PeakSearchAnalysis(Analysis):
         if self.rbtn_data_vswr.isChecked():
             data = []
             for d in self.app.data:
-                data.append(d.as_vswr())
+                data.append(d.vswr)
         elif self.rbtn_data_s21_gain.isChecked():
             data = []
             for d in self.app.data21:
@@ -1225,7 +1225,7 @@ class VSWRAnalysis(Analysis):
         max_dips_shown = 3
         data = []
         for d in self.app.data:
-            data.append(d.as_vswr())
+            data.append(d.vswr)
         # min_idx = np.argmin(data)
         #
         # logger.debug("Minimum at %d", min_idx)
diff --git a/NanoVNASaver/Chart.py b/NanoVNASaver/Chart.py
index 8dbe6a8..9d195e0 100644
--- a/NanoVNASaver/Chart.py
+++ b/NanoVNASaver/Chart.py
@@ -1054,7 +1054,7 @@ class VSWRChart(FrequencyChart):
             minVSWR = 1
             maxVSWR = 3
             for d in self.data:
-                vswr = d.as_vswr()
+                vswr = d.vswr
                 if vswr > maxVSWR:
                     maxVSWR = vswr
             maxVSWR = min(self.maxDisplayValue, math.ceil(maxVSWR))
@@ -1136,7 +1136,7 @@ class VSWRChart(FrequencyChart):
             return self.topMargin + round((self.maxVSWR - vswr) / self.span * self.chartHeight)
 
     def getYPosition(self, d: Datapoint) -> int:
-        return self.getYPositionFromValue(d.as_vswr())
+        return self.getYPositionFromValue(d.vswr)
 
     def valueAtPosition(self, y) -> List[float]:
         absy = y - self.topMargin
diff --git a/NanoVNASaver/Marker.py b/NanoVNASaver/Marker.py
index db3e773..b10da54 100644
--- a/NanoVNASaver/Marker.py
+++ b/NanoVNASaver/Marker.py
@@ -307,7 +307,7 @@ class Marker(QtCore.QObject):
     def updateLabels(self, s11data: List[Datapoint], s21data: List[Datapoint]):
         if self.location != -1:
             re50, im50 = RFTools.normalize50(s11data[self.location])
-            vswr = s11data[self.location].as_vswr()
+            vswr = s11data[self.location].vswr
             if re50 > 0:
                 rp = (re50 ** 2 + im50 ** 2) / re50
                 rp = round(rp, 3 - max(0, math.floor(math.log10(abs(rp)))))
diff --git a/NanoVNASaver/NanoVNASaver.py b/NanoVNASaver/NanoVNASaver.py
index c928bdc..771cfc5 100644
--- a/NanoVNASaver/NanoVNASaver.py
+++ b/NanoVNASaver/NanoVNASaver.py
@@ -750,7 +750,7 @@ class NanoVNASaver(QtWidgets.QWidget):
             min_vswr = 100
             min_vswr_freq = -1
             for d in self.data:
-                vswr = d.as_vswr()
+                vswr = d.vswr
                 if min_vswr > vswr > 0:
                     min_vswr = vswr
                     min_vswr_freq = d.freq
diff --git a/NanoVNASaver/RFTools.py b/NanoVNASaver/RFTools.py
index 8a2ecc8..c0606dd 100644
--- a/NanoVNASaver/RFTools.py
+++ b/NanoVNASaver/RFTools.py
@@ -51,8 +51,9 @@ class Datapoint(NamedTuple):
         if mag > 0:
             return 20 * math.log10(mag)
         return 0
-
-    def as_vswr(self) -> float:
+    
+    @property
+    def vswr(self) -> float:
         mag = abs(self.z)
         if mag == 1:
             return 1