diff --git a/modules.d/50plymouth/install b/modules.d/50plymouth/install
index 8b3843ce..96cb818c 100755
--- a/modules.d/50plymouth/install
+++ b/modules.d/50plymouth/install
@@ -1,7 +1,7 @@
 #!/bin/bash
 
 if grep -q nash /usr/libexec/plymouth/plymouth-populate-initrd \
-   || ! grep -q dracut-functions /usr/libexec/plymouth/plymouth-populate-initrd \
+   || ! grep -q PLYMOUTH_POPULATE_SOURCE_FUNCTIONS /usr/libexec/plymouth/plymouth-populate-initrd \
    || [ ! -x /usr/libexec/plymouth/plymouth-populate-initrd ]; then
     . "$moddir"/plymouth-populate-initrd
 else