diff --git a/indica/readers/read_st40.py b/indica/readers/read_st40.py
index 8b6539b2..bcd2c577 100644
--- a/indica/readers/read_st40.py
+++ b/indica/readers/read_st40.py
@@ -318,6 +318,12 @@ def __call__(
             instruments = INSTRUMENTS
         if revisions is None:
             revisions = {instrument: 0 for instrument in instruments}
+        for instr in instruments:
+            if instr not in revisions.keys():
+                revisions[instr] = 0
+        if "efit" not in revisions:
+            revisions["efit"] = 0
+
         if tstart is None:
             tstart = self.tstart
         if tend is None:
@@ -326,14 +332,14 @@ def __call__(
             dt = self.dt
 
         self.reset_data()
-        self.get_equilibrium(R_shift=R_shift)
-        for i, instrument in enumerate(instruments):
+        self.get_equilibrium(R_shift=R_shift, revision=revisions["efit"])
+        for instrument in instruments:
             print(f"Reading {instrument}")
             if debug:
-                self.get_raw_data("", instrument, revisions[i])
+                self.get_raw_data("", instrument, revisions[instrument])
             else:
                 try:
-                    self.get_raw_data("", instrument, revisions[i])
+                    self.get_raw_data("", instrument, revisions[instrument])
                 except Exception as e:
                     print(f"Error reading {instrument}: {e}")