diff --git a/data/neurons/mechanisms/Im_ms.mod b/data/neurons/mechanisms/Im_ms.mod
index 4fb3e06..ceded7e5 100644
--- a/data/neurons/mechanisms/Im_ms.mod
+++ b/data/neurons/mechanisms/Im_ms.mod
@@ -14,7 +14,7 @@ NEURON	{
 	USEION k READ ek WRITE ik
 	RANGE gbar, gIm, ik
 
-    USEION PKA READ PKAci VALENCE 0
+    USEION PKAc READ PKAci VALENCE 0
     RANGE mod_pka_g_min, mod_pka_g_max, mod_pka_g_half, mod_pka_g_slope 
     RANGE modulation_factor