diff --git a/test/lisp/textmodes/ispell-tests/ispell-aspell-tests.el b/test/lisp/textmodes/ispell-tests/ispell-aspell-tests.el
index 3a442c764d9..cd31cd52d76 100644
--- a/test/lisp/textmodes/ispell-tests/ispell-aspell-tests.el
+++ b/test/lisp/textmodes/ispell-tests/ispell-aspell-tests.el
@@ -34,7 +34,7 @@
                              (file-name-directory load-file-name))))
   (load "ispell-tests-common"))
 
-(declare-function letopt (expand-file-name "ispell-tests-common" source-directory) t t)
+(declare-function letopt "ispell-tests-common" t t)
 
 (ert-deftest ispell/aspell/ispell-check-version/works ()
   "Test that aspell is correctly detected."
diff --git a/test/lisp/textmodes/ispell-tests/ispell-tests.el b/test/lisp/textmodes/ispell-tests/ispell-tests.el
index d4012fb5218..d292b390860 100644
--- a/test/lisp/textmodes/ispell-tests/ispell-tests.el
+++ b/test/lisp/textmodes/ispell-tests/ispell-tests.el
@@ -32,7 +32,7 @@
                              (file-name-directory load-file-name))))
   (load "ispell-tests-common"))
 
-(declare-function letopt "ispell-tests-common")
+(declare-function letopt "ispell-tests-common" t t)
 (declare-function ispell-tests--some-backend "ispell-tests-common" t t)
 (declare-function ispell-tests--some-backend-available-p "ispell-tests-common" t t)