diff --git a/focus_sequence_FLI.py b/focus_sequence_FLI.py
index cb108ab..f995430 100755
--- a/focus_sequence_FLI.py
+++ b/focus_sequence_FLI.py
@@ -26,13 +26,22 @@ def set_focus(foc_val):
 
 
 def get_image(filename, exp_time):
+    #
+    # Eddy's 'fli_control' related stub:
+    #     filename is expected in form 'rootname_DDDD.ext'
+    #     convert it to 'rootname'
+    #
+
+    fname = filename.split("_")
+    fname = fname[0]
+
     cmd = [
         "fli_control",
         "-r",
         "/tmp/10micron.fitsheader",
         "-x",
         "{:d}".format(np.round(exp_time * 1000)),  # to microseconds
-        filename,
+        fname,
     ]
 
     ret = sp.run(cmd, stdout=sp.PIPE, stderr=sp.PIPE)