diff --git a/core/src/main/resources/lib/hudson/project/config-blockWhenDownstreamBuilding.jelly b/core/src/main/resources/lib/hudson/project/config-blockWhenDownstreamBuilding.jelly
index 3f5b547027..04400e5cd9 100644
--- a/core/src/main/resources/lib/hudson/project/config-blockWhenDownstreamBuilding.jelly
+++ b/core/src/main/resources/lib/hudson/project/config-blockWhenDownstreamBuilding.jelly
@@ -22,7 +22,7 @@ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 THE SOFTWARE.
 -->
 
-<!-- Block build when upstream dependency is building -->
+<!-- Block build when downstream dependency is building -->
 <j:jelly xmlns:j="jelly:core" xmlns:st="jelly:stapler" xmlns:d="jelly:define" xmlns:l="/lib/layout" xmlns:t="/lib/hudson" xmlns:f="/lib/form">
   <f:optionalBlock name="blockBuildWhenDownstreamBuilding"
 		   title="${%Block build when downstream project is building}"
diff --git a/war/src/main/webapp/help/project-config/block-downstream-building.html b/war/src/main/webapp/help/project-config/block-downstream-building.html
index 7d8ddc42f0..c76433a373 100644
--- a/war/src/main/webapp/help/project-config/block-downstream-building.html
+++ b/war/src/main/webapp/help/project-config/block-downstream-building.html
@@ -1,3 +1,3 @@
 <div>
- When this option is checked, Hudson will prevent the project from building when a parent of this project is in the queue, or building. The parents include the direct as well as the transitive parents.
+ When this option is checked, Hudson will prevent the project from building when a child of this project is in the queue, or building. The children include the direct as well as the transitive children.
 </div>