diff --git a/pypcc/config/RECVTR_HB_TEST.yaml b/pypcc/config/RECVTR_HB_TEST.yaml
index d591e2f68c78d8ab2895214b9d82f4e854b272d9..4a139ea5720395e2497c516ad64ea115af9eafdd 100644
--- a/pypcc/config/RECVTR_HB_TEST.yaml
+++ b/pypcc/config/RECVTR_HB_TEST.yaml
@@ -331,7 +331,7 @@ variables:
      driver: I2C_RCU
      devreg:  [AN.I_Ant0,AN.I_Ant1,AN.I_Ant2]
      width: 23
-     scale: 3,9736e-7 #3V ref, 2.7K res,  =Vref/2^(23) * 3000/R
+     scale: 3.9736e-7 #3V ref, 2.7K res,  =Vref/2^(23) * 3000/R
      rw:  ro
      dtype: double