diff --git a/rust/bioscript-formats/src/genotype/delimited/scan.rs b/rust/bioscript-formats/src/genotype/delimited/scan.rs
index 2bbfbd2..1b41b82 100644
--- a/rust/bioscript-formats/src/genotype/delimited/scan.rs
+++ b/rust/bioscript-formats/src/genotype/delimited/scan.rs
@@ -190,12 +190,17 @@ pub(crate) fn scan_delimited_variants(
 
     for (idx, variant) in indexed {
         if results[idx].genotype.is_none() {
-            results[idx] = VariantObservation {
-                backend: backend.backend_name().to_owned(),
-                evidence: vec![format!(
+            let evidence = if variant.has_coordinates() {
+                format!(
                     "no matching rsid or locus found for {}",
                     describe_query(variant)
-                )],
+                )
+            } else {
+                "no matching rsid found".to_owned()
+            };
+            results[idx] = VariantObservation {
+                backend: backend.backend_name().to_owned(),
+                evidence: vec![evidence],
                 ..VariantObservation::default()
             };
         }
diff --git a/rust/bioscript-runtime/tests/security.rs b/rust/bioscript-runtime/tests/security.rs
index 63f0513..a0c65e5 100644
--- a/rust/bioscript-runtime/tests/security.rs
+++ b/rust/bioscript-runtime/tests/security.rs
@@ -546,11 +546,9 @@ if __name__ == "__main__":
     let output = fs::read_to_string(dir.join("outputs/batch.txt")).unwrap();
     assert!(output.contains("CT"), "{output}");
     assert!(output.contains("AG"), "{output}");
+    assert!(output.contains("None"), "{output}");
     assert!(output.contains("VariantObservation"), "{output}");
-    assert!(
-        output.contains("no matching rsid or locus found"),
-        "{output}"
-    );
+    assert!(output.contains("no matching"), "{output}");
     let timings = runtime.timing_snapshot();
     assert!(
         timings