diff --git a/tag.sh b/tag.sh
index 40119dc..4ace274 100755
--- a/tag.sh
+++ b/tag.sh
@@ -57,7 +57,7 @@ SCRIPT_NAME=$(basename "$0")
 
 
 DB_FILE="${PWD}/tags.db"
-[ "${1:-}" = "--db" ] && DB_FILE=$(realpath "${2/#~/$HOME}") && shift 2
+[ "${1:-}" = "--db" ] && DB_FILE=$(readlink -f "${2/#~/$HOME}") && shift 2
 
 
 DB_SCHEMA="${SCRIPT_DIR}/database.sql"
@@ -189,7 +189,7 @@ add_path() {
     for FILE in "$@"; do
         [ ! -f "$FILE" ] && fail "File '$FILE' does not exist in the specified path."
         local FILENAME=$(basename "$FILE")
-        local FILEPATH=$(realpath "$(dirname "$FILE")")
+        local FILEPATH=$(readlink -f "$(dirname "$FILE")")
         file_exists_in_db "$FILE" && fail "File '$FILE' already exists in database."
         FILES+=("\"$FILENAME\"")
         FILES+=("\"$FILEPATH\"")
@@ -237,7 +237,7 @@ file_exists_in_db() {
 id_by_filename() {
     # FILENAME
     local FILENAME=$(basename "${1:-}")
-    local FILEPATH=$(realpath "$(dirname "${1:-}")")
+    local FILEPATH=$(readlink -f "$(dirname "${1:-}")")
     local RESULT=0
     RESULT=$(sqlite_query "SELECT id FROM files WHERE filename = \"$FILENAME\" AND path = \"$FILEPATH\"")
     echo $RESULT