diff --git a/clen_tools/detector-distance-refinement.py b/clen_tools/detector-distance-refinement.py
index e82a4f0..a76a0c4 100644
--- a/clen_tools/detector-distance-refinement.py
+++ b/clen_tools/detector-distance-refinement.py
@@ -211,7 +211,7 @@ def scrub_us( stream ):
     # example - Cell parameters 7.71784 7.78870 3.75250 nm, 90.19135 90.77553 90.19243 deg
     # scrub clen and return - else nan
     try:
-        pattern = r"Cell\sparameters\s(\d\.\d+)\s(\d\.\d+)\s(\d\.\d+)\snm,\s(\d+\.\d+)\s(\d+\.\d+)\s(\d+\.\d+)\sdeg"
+        pattern = r"Cell\sparameters\s(\d+\.\d+)\s(\d+\.\d+)\s(\d+\.\d+)\snm,\s(\d+\.\d+)\s(\d+\.\d+)\s(\d+\.\d+)\sdeg"
         cells = re.findall( pattern, stream )
         if AttributeError:
             return cells