diff --git a/gravity.sh b/gravity.sh
index 58d60ff4..49a4fc1c 100755
--- a/gravity.sh
+++ b/gravity.sh
@@ -163,7 +163,7 @@ database_table_from_file() {
   inputfile="${tmpFile}"
 
   # Remove possible duplicates found in lower-quality adlists
-  uniq -u "${inputfile}" "${inputfile}"
+  sort -u -o "${inputfile}" "${inputfile}"
 
   # Store domains in database table specified by ${table}
   # Use printf as .mode and .import need to be on separate lines