diff --git a/.github/workflows/verify.yml b/.github/workflows/verify.yml
index 7aa7d687b..8caebc50f 100644
--- a/.github/workflows/verify.yml
+++ b/.github/workflows/verify.yml
@@ -43,7 +43,7 @@ jobs:
       - name: VNC
         run: vncserver $DISPLAY -localhost=1 -noxstartup -PasswordFile /root/.vnc/passwd
       - name: Build
-        run: ./build.sh -DforceContextQualifier=`date '+%Y%m%d%H%M'` -DbuildUrl=file://`pwd` --errors --batch-mode --no-transfer-progress
+        run: ./build.sh -DforceContextQualifier=`date '+%Y%m%d%H%M'` --errors --batch-mode --no-transfer-progress
       - name: List all files
         if: always()
         run: find . > files.txt
@@ -107,7 +107,7 @@ jobs:
       - name: VNC
         run: vncserver $DISPLAY -localhost=1 -noxstartup -PasswordFile /root/.vnc/passwd
       - name: Build
-        run: ./build.sh -PlatestPlatform -PforceContextQualifier -DforceContextQualifier=`date '+%Y%m%d%H%M'` -DbuildUrl=file://`pwd` --errors --batch-mode --no-transfer-progress
+        run: ./build.sh -PlatestPlatform -PforceContextQualifier -DforceContextQualifier=`date '+%Y%m%d%H%M'` --errors --batch-mode --no-transfer-progress
       - name: List all files
         if: always()
         run: find . > files.txt
diff --git a/releng/pom.xml b/releng/pom.xml
index 5aeb19f23..cf2d03bb9 100644
--- a/releng/pom.xml
+++ b/releng/pom.xml
@@ -39,7 +39,7 @@
     <ajJavaTarget>1.8</ajJavaTarget>
 		<ajJavaCompilance>1.8</ajJavaCompilance>
 		<cbi-version>1.5.4</cbi-version>
-		<buildUrl>file:/${user.dir}</buildUrl>
+		<buildUrl>file://${maven.multiModuleProjectDirectory}</buildUrl> <!-- overridden by unix-build-url / windows-build-url profiles -->
 	</properties>
 	<prerequisites>
 		<maven>3.9.0</maven>
@@ -210,7 +210,7 @@
         <plugin>
           <groupId>org.codehaus.mojo</groupId>
           <artifactId>build-helper-maven-plugin</artifactId>
-          <version>3.0.0</version>
+          <version>3.6.0</version>
         </plugin>
         <plugin>
           <groupId>org.codehaus.mojo</groupId>
@@ -220,6 +220,26 @@
       </plugins>
     </pluginManagement>
     <plugins>
+      <plugin>
+        <groupId>org.codehaus.mojo</groupId>
+        <artifactId>build-helper-maven-plugin</artifactId>
+        <executions>
+          <execution>
+            <id>set-build-url</id>
+            <phase>initialize</phase>
+            <goals>
+              <goal>regex-property</goal>
+            </goals>
+            <configuration>
+              <name>buildUrl</name>
+              <value>${buildUrl}</value>
+              <regex>\\</regex>
+              <replacement>/</replacement>
+              <failIfNoMatch>false</failIfNoMatch>
+            </configuration>
+          </execution>
+        </executions>
+      </plugin>
       <plugin>
           <groupId>org.eclipse.dash</groupId>
           <artifactId>license-tool-plugin</artifactId>
@@ -285,6 +305,26 @@
     </plugins>
   </build>
   <profiles>
+    <profile>
+      <!-- On Unix/Linux/macOS the path starts with /, so file:// + /path = file:///path -->
+      <id>unix-build-url</id>
+      <activation>
+        <os><family>unix</family></os>
+      </activation>
+      <properties>
+        <buildUrl>file://${maven.multiModuleProjectDirectory}</buildUrl>
+      </properties>
+    </profile>
+    <profile>
+      <!-- On Windows the path starts with a drive letter, so file:/// + C:/path = file:///C:/path -->
+      <id>windows-build-url</id>
+      <activation>
+        <os><family>windows</family></os>
+      </activation>
+      <properties>
+        <buildUrl>file:///${maven.multiModuleProjectDirectory}</buildUrl>
+      </properties>
+    </profile>
     <profile>
       <id>update-version</id>
       <modules>