diff --git a/systemd-units/systemd-ask-password-plymouth.service.in b/systemd-units/systemd-ask-password-plymouth.service.in
index 242b7334..81980f01 100644
--- a/systemd-units/systemd-ask-password-plymouth.service.in
+++ b/systemd-units/systemd-ask-password-plymouth.service.in
@@ -7,7 +7,7 @@ After=plymouth-start.service
 Before=shutdown.target
 ConditionKernelCommandLine=!plymouth.enable=0
 ConditionVirtualization=!container
-ConditionPathExists=/run/plymouth/pid
+ConditionPathExists=@plymouthruntimedir@/pid
 
 [Service]
 ExecStart=@SYSTEMD_ASK_PASSWORD_AGENT@ --watch --plymouth