diff --git a/doc/default_theme.rasi b/doc/default_theme.rasi
index 345749c0..ecf2190b 100644
--- a/doc/default_theme.rasi
+++ b/doc/default_theme.rasi
@@ -138,6 +138,8 @@ case-indicator {
 entry {
     spacing:    0;
     text-color: var(normal-foreground);
+    placeholder-color: grey;
+    placeholder: "Type to filter";
 }
 prompt {
     spacing:    0;