diff --git a/src/site/apt/usage.apt.vm b/src/site/apt/usage.apt.vm
index 0a15d1a..3810d5b 100644
--- a/src/site/apt/usage.apt.vm
+++ b/src/site/apt/usage.apt.vm
@@ -67,7 +67,7 @@ Usage
               <addDefaultImplementationEntries>true</addDefaultImplementationEntries>
             </manifest>
             <manifestEntries>
-              <Implementation-Build>$\{buildNumber}</Implementation-Build>
+              <Implementation-Build>${buildNumber}</Implementation-Build>
             </manifestEntries>
           </archive>
         </configuration>
@@ -92,7 +92,7 @@ Usage
               <addDefaultImplementationEntries>true</addDefaultImplementationEntries>
             </manifest>
             <manifestEntries>
-              <Implementation-Build>$\{buildNumber}</Implementation-Build>
+              <Implementation-Build>${buildNumber}</Implementation-Build>
             </manifestEntries>
           </archive>
         </configuration>