diff --git a/image_analysis/indexing/EigenRefine.h b/image_analysis/indexing/EigenRefine.h
index de629a526..f319005e8 100644
--- a/image_analysis/indexing/EigenRefine.h
+++ b/image_analysis/indexing/EigenRefine.h
@@ -113,7 +113,7 @@ inline std::vector<CrystalLattice> Refine(const std::vector<Coord> &in_spots,
     float min_score = -1;
     int64_t id = -1;
 
-    const auto float indexing_tolerance_sq = p.indexing_tolerance * p.indexing_tolerance;
+    const float indexing_tolerance_sq = p.indexing_tolerance * p.indexing_tolerance;
 
     for (int i = 0; i < scores.size(); i++) {
         // Get cell vectors