diff --git a/DESCRIPTION b/DESCRIPTION
index 0b65f266..4b2d72ac 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -18,7 +18,7 @@ Authors@R: c(
     person("Pfizer Inc", role = c("cph", "fnd"))
     )
 Description: An EDC and Data Standard-agnostic SDTM data transformation engine 
-designed for SDTM programming in R. Powered by metadata {sdtm.oak} can automate
+designed for SDTM programming in R. Powered by metadata `sdtm.oak` can automate
 the conversion of raw clinical data to SDTM through standardized mapping 
 algorithms. SDTM is one of the required standards for data submission to 
 FDA (U.S.) and PMDA (Japan). SDTM standards are implemented in accordance with the
diff --git a/inst/create_cm_template.R b/inst/create_cm_template.R
index d802b13c..dbd93549 100644
--- a/inst/create_cm_template.R
+++ b/inst/create_cm_template.R
@@ -220,9 +220,12 @@ cm <- MD1 |>
   derive_usubjid() |>
   derive_sequence(keys = c(USUBJID, CMTRT)) |>
   derive_visit_visitnum() |>
-  derive_study_day(
+  calculate_study_day(
+    dm_domain = dm,
+    study_day_var = "RFSTDTS",
     var_in = CMSTDTC,
-    target_var = CMSTDY
+    target_var = CMSTDY,
+    merge_key = "USUBJID"
   ) |>
   derive_study_day(
     var_in = CMENDTC,
diff --git a/staged_dependencies.yaml b/staged_dependencies.yaml
index 72a49b08..a1406e69 100644
--- a/staged_dependencies.yaml
+++ b/staged_dependencies.yaml
@@ -8,4 +8,3 @@ downstream_repos:
 current_repo:
   repo: pharmaverse/sdtm.oak
   host: https://github.com
-  
\ No newline at end of file