diff --git a/src/lava/lib/dl/slayer/neuron/adrf.py b/src/lava/lib/dl/slayer/neuron/adrf.py
index ed40298d6..59b60eb92 100644
--- a/src/lava/lib/dl/slayer/neuron/adrf.py
+++ b/src/lava/lib/dl/slayer/neuron/adrf.py
@@ -674,4 +674,4 @@ def forward(self, input):
 
         """
         real, imag, threshold, refractory = self.dynamics(input)
-        return self.spike(real, imag, threshold + refractory)
+        return self.spike(real, imag, threshold, refractory)