diff --git a/read_data.R b/read_data.R
index d30bf74..19e4f45 100755
--- a/read_data.R
+++ b/read_data.R
@@ -141,5 +141,5 @@ table(adult_df$ia_exac_copd==1 & adult_df$asthma == 1) # check this is 4
 table(fp_adults$ia_exac_copd==1 & fp_adults$asthma == 1) # check this is 3
 
 # clear unnecessary variables
-rm(metadata_all)
+#rm(metadata_all)
 rm(all_df, adult_df)