diff --git a/data-raw/meta.csv b/data-raw/meta.csv
index 601f225e..9329a104 100644
--- a/data-raw/meta.csv
+++ b/data-raw/meta.csv
@@ -13,8 +13,8 @@ measure_col,labs,measure_col,,column,Measure column,Lab measure variable name,FA
 normal_col_low,labs,normal_col_low,,column,Lower Limit of Normal column,Lower limit of normal variable name,FALSE,A1LO,STNRLO
 normal_col_high,labs,normal_col_high,,column,Upper Limit of Normal column,Upper limit of normal variable name,FALSE,A1HI,STNRHI
 studyday_col,labs,studyday_col,,column,Study Day column,Visit day variable name,FALSE,ADY,DY
-visit_col,labs,visit_col,,column,Visit column,Visit variable name,FALSE,VISIT,VISIT
-visitn_col,labs,visitn_col,,column,Visit Number column,Visit number variable name,FALSE,VISITNUM,VISITNUM
+visit_col,labs,visit_col,,column,Visit column,Visit variable name,FALSE,AVISIT,VISIT
+visitn_col,labs,visitn_col,,column,Visit Number column,Visit number variable name,FALSE,AVISITN,VISITNUM
 measure_values--ALT,labs,measure_col,ALT,field,Alanine Aminotransferase value,Value used for Alanine Aminotransferase in the specified measure column,FALSE,Alanine Aminotransferase (U/L),"Aminotransferase, alanine (ALT)"
 measure_values--AST,labs,measure_col,AST,field,Aspartate Aminotransferase value,Value used for Aspartate Aminotransferase in the specified measure column,FALSE,Aspartate Aminotransferase (U/L),"Aminotransferase, aspartate (AST)"
 measure_values--TB,labs,measure_col,TB,field,Total Bilirubin value,Value used for Total Bilirubin in the specified measure column,FALSE,Bilirubin (umol/L),Total Bilirubin
diff --git a/data/meta.rda b/data/meta.rda
index 5dfc94d5..e8c20b29 100644
Binary files a/data/meta.rda and b/data/meta.rda differ