diff --git a/evil-collection-helm.el b/evil-collection-helm.el
index a6b282f..1cd5cb4 100644
--- a/evil-collection-helm.el
+++ b/evil-collection-helm.el
@@ -45,6 +45,7 @@
 (defvar helm--prompt)
 (defvar helm--action-prompt)
 (defvar helm-header-line-space-before-prompt)
+(defvar helm-default-prompt-display-function)
 
 (declare-function helm-window "helm-lib")