diff --git a/documentation/dev-manual/dev-manual-common-tasks.xml b/documentation/dev-manual/dev-manual-common-tasks.xml
index bca869aa2d..750ee52831 100644
--- a/documentation/dev-manual/dev-manual-common-tasks.xml
+++ b/documentation/dev-manual/dev-manual-common-tasks.xml
@@ -3481,7 +3481,7 @@
             <para>
                 A Package Test (ptest) runs tests against packages built 
                 by the OpenEmbedded build system on the target machine.
-                Minimally, a Ptest contains two things: a shell script that 
+                Minimally, a ptest contains two things: a shell script that 
                 starts the test (<filename>run-ptest</filename>),
                 and the actual test.
                 The shell script that starts the test must not contain 
@@ -3508,7 +3508,7 @@
                 <title>Getting Your Package Ready</title>
  
                 <para>
-                    In order to run installed Ptests on target hardware, 
+                    In order to run installed ptests on target hardware, 
                     you need to prepare the recipes that build the packages     
                     you want to test.
                     Here is what you have to do for each recipe:
@@ -3630,7 +3630,7 @@
 
                 <para>
                     The <filename>ptest-runner</filename> package installs a 
-                    shell script that loops through all installed Ptest test 
+                    shell script that loops through all installed ptest test 
                     suites and runs them in sequence. 
                     Consequently, you might want to add this package to
                     your image.