diff --git a/compiler/pgates/pinv.py b/compiler/pgates/pinv.py
index 4a39d065..84f14590 100644
--- a/compiler/pgates/pinv.py
+++ b/compiler/pgates/pinv.py
@@ -245,8 +245,8 @@ class pinv(pgate.pgate):
     def analytical_power(self, proc, vdd, temp, load):
         #Returns dynamic and leakage power. Results in nW
         c_eff = self.calculate_effective_capacitance(load)
-        f = spice["default_event_rate"]
-        power_dyn = c_eff*vdd*vdd*f
+        freq = spice["default_event_rate"]
+        power_dyn = c_eff*vdd*vdd*freq
         power_leak = spice["inv_leakage"]
         
         total_power = self.return_power(power_dyn, power_leak)
diff --git a/compiler/pgates/pnand2.py b/compiler/pgates/pnand2.py
index 98138395..c95e814c 100644
--- a/compiler/pgates/pnand2.py
+++ b/compiler/pgates/pnand2.py
@@ -217,8 +217,8 @@ class pnand2(pgate.pgate):
     def analytical_power(self, proc, vdd, temp, load):
         #Returns dynamic and leakage power. Results in nW
         c_eff = self.calculate_effective_capacitance(load)
-        f = spice["default_event_rate"]
-        power_dyn = c_eff*vdd*vdd*f
+        freq = spice["default_event_rate"]
+        power_dyn = c_eff*vdd*vdd*freq
         power_leak = spice["nand2_leakage"]
         
         total_power = self.return_power(power_dyn, power_leak)
diff --git a/compiler/pgates/pnand3.py b/compiler/pgates/pnand3.py
index 7fe4897e..ca1c6244 100644
--- a/compiler/pgates/pnand3.py
+++ b/compiler/pgates/pnand3.py
@@ -237,8 +237,8 @@ class pnand3(pgate.pgate):
     def analytical_power(self, proc, vdd, temp, load):
         #Returns dynamic and leakage power. Results in nW
         c_eff = self.calculate_effective_capacitance(load)
-        f = spice["default_event_rate"]
-        power_dyn = c_eff*vdd*vdd*f
+        freq = spice["default_event_rate"]
+        power_dyn = c_eff*vdd*vdd*freq
         power_leak = spice["nand3_leakage"]
         
         total_power = self.return_power(power_dyn, power_leak)
diff --git a/compiler/pgates/pnor2.py b/compiler/pgates/pnor2.py
index b59f8733..1508a487 100644
--- a/compiler/pgates/pnor2.py
+++ b/compiler/pgates/pnor2.py
@@ -227,8 +227,8 @@ class pnor2(pgate.pgate):
     def analytical_power(self, proc, vdd, temp, load):
         #Returns dynamic and leakage power. Results in nW
         c_eff = self.calculate_effective_capacitance(load)
-        f = spice["default_event_rate"]
-        power_dyn = c_eff*vdd*vdd*f
+        freq = spice["default_event_rate"]
+        power_dyn = c_eff*vdd*vdd*freq
         power_leak = spice["nor2_leakage"]
         
         total_power = self.return_power(power_dyn, power_leak)