diff --git a/plio/io/io_moon_minerology_mapper.py b/plio/io/io_moon_minerology_mapper.py
index cce772febecedefce31c1303af06e249e02ba22a..8bd7210811a8a66d1c5119112e0bb6c3bc679797 100644
--- a/plio/io/io_moon_minerology_mapper.py
+++ b/plio/io/io_moon_minerology_mapper.py
@@ -17,7 +17,7 @@ def metadatatoband(metadata):
     wv2band = []
     for k, v in metadata.items():
         try:
-            wv2band.append(float(value))
+            wv2band.append(float(v))
         except:
             v = v.split(" ")[-1].split("(")[1].split(")")[0]
             wv2band.append(float(v))