diff --git a/NEWS.md b/NEWS.md
index 06a6ffb..2b19b3f 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,5 +1,7 @@
 # pakret (development version)
 
+* Fixed alphabetical ordering of package names in `as.data.frame.pkrt_list()` (#19).
+
 # pakret 0.2.0
 
 * Added `book` as a second BibTeX type that should be used in priority when getting the reference of a package (previously, the priority was given to `manual` entries only). This allows for a slightly better handling of multi-reference packages by using a more general reference when there's a `book` but no `manual` BibTeX entry available (#15).
diff --git a/R/pkrt-list.R b/R/pkrt-list.R
index a6362d2..e0cc3fc 100644
--- a/R/pkrt-list.R
+++ b/R/pkrt-list.R
@@ -63,7 +63,7 @@ as.data.frame.pkrt_list <- function(x, ...) {
 
 sort.pkrt_list <- function(x, ...) {
   pkgs <- vapply(x, function(.x) attr(.x, "pkg"), character(1L))
-  x[factor(pkgs)]
+  x[sort(pkgs)]
 }
 
 #' @export
diff --git a/tests/testthat/test-pkrt-list.R b/tests/testthat/test-pkrt-list.R
index 856e021..e8aced7 100644
--- a/tests/testthat/test-pkrt-list.R
+++ b/tests/testthat/test-pkrt-list.R
@@ -10,14 +10,15 @@ test_that("pkrt_list() makes a list of citations", {
 test_that("citation lists can be turned into data frames", {
   load_foo()
   load_bar()
-  citations <- pkrt_list("foo", "bar")
+  local_pkg("zzz", Version = "0.1.0")
+  citations <- pkrt_list("zzz", "bar", "foo")
 
   expect_equal(
     as.data.frame(citations),
     data.frame(
-      Package = c("bar", "foo"),
-      Version = c("0.2.0", "1.0.0"),
-      Reference = c("@bar", "@foo")
+      Package = c("bar", "foo", "zzz"),
+      Version = c("0.2.0", "1.0.0", "0.1.0"),
+      Reference = c("@bar", "@foo", "@zzz")
     )
   )
 })