diff --git a/gnu/services/pm.scm b/gnu/services/pm.scm
index 3817bd09de..1e01b5059d 100644
--- a/gnu/services/pm.scm
+++ b/gnu/services/pm.scm
@@ -401,7 +401,8 @@ (define tlp-service-type
                         (compose list tlp-configuration-tlp))
      (service-extension activation-service-type
                         tlp-activation)))
-   (default-value (tlp-configuration))))
+   (default-value (tlp-configuration))
+   (description "Run TLP, a power management tool.")))
 
 (define (generate-tlp-documentation)
   (generate-documentation
@@ -441,4 +442,6 @@ (define thermald-service-type
    (name 'thermald)
    (extensions (list (service-extension shepherd-root-service-type
                                         thermald-shepherd-service)))
-   (default-value (thermald-configuration))))
+   (default-value (thermald-configuration))
+   (description "Run thermald, a CPU frequency scaling service that helps
+prevent overheating.")))