diff --git a/CHANGELOG.md b/CHANGELOG.md
index ded2c69ecf..2f4b6fe189 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,8 @@ About changelog [here](https://keepachangelog.com/en/1.0.0/)
 ## [unreleased]
 ### Changed
 - Changelog enforcement specific to the `unreleased` changelog section (#6216)
+### Fixed
+- Bug calculating allele read depth in samples genotype module (#6469)
 
 ## [4.113.3]
 ### Fixed
diff --git a/scout/parse/variant/genotype.py b/scout/parse/variant/genotype.py
index 0c0b9e4afd..5d63f5b884 100755
--- a/scout/parse/variant/genotype.py
+++ b/scout/parse/variant/genotype.py
@@ -357,7 +357,7 @@ def get_read_depth(variant, pos, alt_depth, ref_depth):
             if alt_depth != -1:
                 read_depth += alt_depth
             if ref_depth != -1:
-                read_depth += alt_depth
+                read_depth += ref_depth
     return read_depth