diff --git a/script/Extreme.py b/script/Extreme.py
index 33977a5..14fb192 100644
--- a/script/Extreme.py
+++ b/script/Extreme.py
@@ -4,7 +4,7 @@ B1 = 1.8     # starting mag. field in Amps
 B2 = -1.8      # final mag. field in Amps
 BSTEP = 0.2   # step size mag. field in Amps
 ENERGIES = (707.90, 703.90) #list of energies in eV
-MODE = 'CIRC +' #polarization (CIRC+ or CIRC-)
+MODE = "CIRC +" #polarization (CIRC+ or CIRC-)
 OFFSET1 = -10 #ID1 offset
 OFFSET2 = -15 #ID2 offset
 FIELD_PRECISION = 0.05 #  in Amps