diff --git a/org-ql-completing-read.el b/org-ql-completing-read.el
index 640033d..18cfd7f 100644
--- a/org-ql-completing-read.el
+++ b/org-ql-completing-read.el
@@ -27,6 +27,7 @@
 (require 'org-ql)
 
 (declare-function org-ql-search "org-ql-search")
+(declare-function org-ql--normalize-query "org-ql" t t)
 
 ;;;; Variables
 
diff --git a/org-ql-find.el b/org-ql-find.el
index f6f2b9c..820d2dd 100644
--- a/org-ql-find.el
+++ b/org-ql-find.el
@@ -33,6 +33,8 @@
 (require 'org-ql-search)
 (require 'org-ql-completing-read)
 
+(declare-function org-ql--normalize-query "org-ql" t t)
+
 ;;;; Customization
 
 (defgroup org-ql-find nil
diff --git a/org-ql-search.el b/org-ql-search.el
index d08397a..9c783b9 100644
--- a/org-ql-search.el
+++ b/org-ql-search.el
@@ -40,6 +40,8 @@
 (require 'org-ql)
 (require 'org-ql-view)
 
+(declare-function org-ql--normalize-query "org-ql" t t)
+
 ;;;; Compatibility
 
 (defalias 'org-ql-search--link-heading-search-string
diff --git a/org-ql-view.el b/org-ql-view.el
index 5889a56..918fc7f 100644
--- a/org-ql-view.el
+++ b/org-ql-view.el
@@ -44,6 +44,7 @@
 
 (declare-function org-ql-search "org-ql-search" t)
 (declare-function org-ql-search--org-link-store-props "org-ql-search" t)
+(declare-function org-ql--normalize-query "org-ql" t t)
 
 (require 'dash)
 (require 's)
diff --git a/tests/test-org-ql.el b/tests/test-org-ql.el
index 8d2b84c..1259004 100644
--- a/tests/test-org-ql.el
+++ b/tests/test-org-ql.el
@@ -35,6 +35,8 @@
 
 (require 'xr)
 
+(declare-function org-ql--normalize-query "org-ql" t t)
+
 ;;;; Variables
 
 (defvar org-ql-test-buffer nil