diff --git a/image_analysis/IndexAndRefine.cpp b/image_analysis/IndexAndRefine.cpp
index 8605b232..db41ad43 100644
--- a/image_analysis/IndexAndRefine.cpp
+++ b/image_analysis/IndexAndRefine.cpp
@@ -65,17 +65,14 @@ IndexAndRefine::IndexingOutcome IndexAndRefine::DetermineLatticeAndSymmetry(Data
     auto latt = indexer_result.lattice[0];
     auto sg = experiment.GetGemmiSpaceGroup();
 
-    // If space group provided => always enforce symmetry in refinement
+    // If space group and cell provided => always enforce symmetry in refinement
     // If space group not provided => guess symmetry
-    if (sg) {
-        // If space group provided but no unit cell fixed, it is better to keep triclinic for now
-        if (experiment.GetUnitCell()) {
-            outcome.symmetry = LatticeMessage{
-                .centering = sg->centring_type(),
-                .niggli_class = 0,
-                .crystal_system = sg->crystal_system()
-            };
-        }
+    if (sg && experiment.GetUnitCell()) {
+        outcome.symmetry = LatticeMessage{
+            .centering = sg->centring_type(),
+            .niggli_class = 0,
+            .crystal_system = sg->crystal_system()
+        };
         outcome.lattice_candidate = latt;
     } else {
         auto sym_result = LatticeSearch(latt);