diff --git a/org-ql-agenda.el b/org-ql-agenda.el
index bba97aa..89c9364 100644
--- a/org-ql-agenda.el
+++ b/org-ql-agenda.el
@@ -46,7 +46,7 @@
 (declare-function org-super-agenda--group-items "ext:org-super-agenda")
 
 (when (version< org-version "9.2")
-  (defalias 'org-get-tags 'org-get-tags-at))
+  (defalias 'org-get-tags #'org-get-tags-at))
 
 ;;;; Variables
 
diff --git a/org-ql.el b/org-ql.el
index 6617e2b..a01a0e8 100644
--- a/org-ql.el
+++ b/org-ql.el
@@ -44,8 +44,8 @@
 ;;;; Compatibility
 
 (when (version< org-version "9.2")
-  (defalias 'org-get-tags 'org-get-tags-at)
-  (defalias 'org-timestamp-to-time 'org-timestamp--to-internal-time))
+  (defalias 'org-get-tags #'org-get-tags-at)
+  (defalias 'org-timestamp-to-time #'org-timestamp--to-internal-time))
 
 ;;;; Variables