diff --git a/org-ql-search.el b/org-ql-search.el
index f2fd9534..cedcadb9 100644
--- a/org-ql-search.el
+++ b/org-ql-search.el
@@ -44,20 +44,17 @@
   (cond ((fboundp 'org-link--normalize-string) #'org-link--normalize-string)
         ((fboundp 'org-link-heading-search-string) #'org-link-heading-search-string)
         ((fboundp 'org-make-org-heading-search-string) #'org-make-org-heading-search-string)
-        (t (warn "org-ql: Unable to define alias `org-ql-search--link-heading-search-string'.  This may affect links in dynamic blocks.  Please report this as a bug.")
-           #'identity)))
+        (t (error "org-ql: Unable to define alias `org-ql-search--link-heading-search-string'.  This may affect links in dynamic blocks.  Please report this as a bug"))))
 
 (defalias 'org-ql-search--org-make-link-string
   (cond ((fboundp 'org-link-make-string) #'org-link-make-string)
         ((fboundp 'org-make-link-string) #'org-make-link-string)
-        (t (warn "org-ql: Unable to define alias `org-ql-search--org-make-link-string'.  Please report this as a bug.")
-           #'identity)))
+        (t (error "org-ql: Unable to define alias `org-ql-search--org-make-link-string'.  Please report this as a bug"))))
 
 (defalias 'org-ql-search--org-link-store-props
   (cond ((fboundp 'org-link-store-props) #'org-link-store-props)
         ((fboundp 'org-store-link-props) #'org-store-link-props)
-        (t (warn "org-ql: Unable to define alias `org-ql-search--org-link-store-props'.  Please report this as a bug.")
-           #'identity)))
+        (t (error "org-ql: Unable to define alias `org-ql-search--org-link-store-props'.  Please report this as a bug"))))
 
 ;;;; Variables
 
diff --git a/org-ql.el b/org-ql.el
index 9bb05fd6..3c70b34e 100644
--- a/org-ql.el
+++ b/org-ql.el
@@ -1351,8 +1351,7 @@ result form."
   ;; TODO: Remove when compatibility with Org 9.0 is dropped.
   (cond ((fboundp 'org-duration-to-minutes) #'org-duration-to-minutes)
         ((fboundp 'org-duration-string-to-minutes) #'org-duration-string-to-minutes)
-        (t (warn "org-ql: Unable to define alias `org-ql-search--link-heading-search-string'.  Please report this as a bug.")
-           #'identity))
+        (t (error "org-ql: Unable to define alias `org-ql-search--link-heading-search-string'.  Please report this as a bug")))
   "Return DURATION string as a number of minutes.
 For compatibility, since Org 9.1 deprecated
 `org-duration-string-to-minutes', replacing it with
diff --git a/tests/test-org-ql.el b/tests/test-org-ql.el
index 3af35371..e6fc9092 100644
--- a/tests/test-org-ql.el
+++ b/tests/test-org-ql.el
@@ -201,10 +201,7 @@ with keyword arg NOW in PLIST."
         (insert "* Heading 1")
         ;; FIXME: `--value-at' does not actually move point, so we do it here.
         (goto-char (point-min))
-        (expect (org-ql--value-at (point-min)
-                                  ;; TODO: Just use org-get-tags when requiring Org 9.2+.
-                                  (cond ((fboundp 'org-get-tags) #'org-get-tags)
-                                        ((fboundp 'org-get-local-tags) #'org-get-local-tags)))
+        (expect (org-ql--value-at (point-min) #'ignore)
                 :to-be nil))))
 
   (describe "Query pre-processing"