diff --git a/types/servicelimits.pp b/types/servicelimits.pp
index 2be73b13..2c438db4 100644
--- a/types/servicelimits.pp
+++ b/types/servicelimits.pp
@@ -9,7 +9,7 @@
     Optional['LimitRSS']            => Pattern['^(infinity|((\d+(K|M|G|T|P|E)(:\d+(K|M|G|T|P|E))?)))$'],
     Optional['LimitNOFILE']         => Variant[Integer[-1],Pattern['^(infinity|\d+(:(infinity|\d+))?)$']],
     Optional['LimitAS']             => Pattern['^(infinity|((\d+(K|M|G|T|P|E)(:\d+(K|M|G|T|P|E))?)))$'],
-    Optional['LimitNPROC']          => Integer[1],
+    Optional['LimitNPROC']          => Variant[Integer[-1],Pattern['^(infinity|\d+(:(infinity|\d+))?)$']],
     Optional['LimitMEMLOCK']        => Pattern['^(infinity|((\d+(K|M|G|T|P|E)(:\d+(K|M|G|T|P|E))?)))$'],
     Optional['LimitLOCKS']          => Integer[1],
     Optional['LimitSIGPENDING']     => Integer[1],