diff --git a/doc/html/acct_gather_energy_plugins.shtml b/doc/html/acct_gather_energy_plugins.shtml
index b7f8aae17d9059f80b798e01258348f64c5e2162..4b55ef2e818d6818eddde1a914534bd5bda78314 100644
--- a/doc/html/acct_gather_energy_plugins.shtml
+++ b/doc/html/acct_gather_energy_plugins.shtml
@@ -28,7 +28,8 @@ for the type of energy accounting. We currently use
 BMC (Baseboard Management Controller) using the
 IPMI (Intelligent Platform Management Interface) tool.
 <li><b>rapl</b>&#151;Gets energy consumption data from hardware sensors on each 
-core/socket, using RAPL (Running Average Power Limit) sensors.
+core/socket, using RAPL (Running Average Power Limit) sensors. Note that
+enabling RAPL may require the execution of the command "sudo modprobe msr".
 </ul>
 <p>The programmer is urged to study
 <span class="commandline">src/plugins/acct_gather_energy/rapl</span> and 
@@ -98,7 +99,7 @@ for SLURM plugins.</p>
 
 <p class="footer"><a href="#top">top</a>
 
-<p style="text-align:center;">Last modified 7 November 2012</p>
+<p style="text-align:center;">Last modified 8 November 2012</p>
 
 <!--#include virtual="footer.txt"-->
 
diff --git a/doc/man/man5/slurm.conf.5 b/doc/man/man5/slurm.conf.5
index 0b83cf34c1f3d555d29d47d5420d379aa42103c9..e54d600b3fcb0dbd94782cf3a60214245af3f22b 100644
--- a/doc/man/man5/slurm.conf.5
+++ b/doc/man/man5/slurm.conf.5
@@ -174,7 +174,8 @@ Energy consumption data is collected from the Baseboard Management Controller
 .TP
 \fBacct_gather_energy/rapl\fR
 Energy consumption data is collected from hardware sensors using the Running
-Average Power Limit (RAPL) mechanism.
+Average Power Limit (RAPL) mechanism. Note that enabling RAPL may require the
+execution of the command "sudo modprobe msr".
 .RE
 
 .TP