diff --git a/pom.xml b/pom.xml
index dbb1dd37a2e97980b7b14193a5771a2773eb09de..2a4e6d9dadcfef85c47ddc5efdb4c55e781f3b28 100644
--- a/pom.xml
+++ b/pom.xml
@@ -124,15 +124,29 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-resources-plugin</artifactId>
-        <configuration>
-          <delimiters>
-            <delimiter>@</delimiter>
-          </delimiters>
-          <useDefaultDelimiters>false</useDefaultDelimiters>
-          <nonFilteredFileExtensions>
-            <nonFilteredFileExtension>pdf</nonFilteredFileExtension>
-          </nonFilteredFileExtensions>
-        </configuration>
+        <executions>
+          <execution>
+            <id>copy-resources</id>
+            <phase>validate</phase>
+            <goals>
+              <goal>copy-resources</goal>
+            </goals>
+            <configuration>
+              <outputDirectory>${project.build.directory}/classes/static/pdfs</outputDirectory>
+              <resources>
+                <resource>
+                  <directory>docs/about</directory>
+                  <includes>
+                    <include>naming_rest_api_brief_introduction.pdf</include>
+                    <include>naming_rest_api_cheat_sheet.pdf</include>
+                    <include>naming_rest_api_excel_guide.pdf</include>
+                    <include>naming_rest_api_migration.pdf</include>
+                  </includes>
+                </resource>
+              </resources>
+            </configuration>
+          </execution>
+        </executions>
       </plugin>
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
diff --git a/src/main/resources/static/pdfs/naming_rest_api_brief_introduction.pdf b/src/main/resources/static/pdfs/naming_rest_api_brief_introduction.pdf
deleted file mode 100644
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diff --git a/src/main/resources/static/pdfs/naming_rest_api_cheat_sheet.pdf b/src/main/resources/static/pdfs/naming_rest_api_cheat_sheet.pdf
deleted file mode 100644
index 0d683feb9b56d0f730a418c9ae362f5602172ed6..0000000000000000000000000000000000000000
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diff --git a/src/main/resources/static/pdfs/naming_rest_api_excel_guide.pdf b/src/main/resources/static/pdfs/naming_rest_api_excel_guide.pdf
deleted file mode 100644
index 076472fdc097e5b352c9e2ca0fd0666833d6dc4a..0000000000000000000000000000000000000000
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diff --git a/src/main/resources/static/pdfs/naming_rest_api_migration.pdf b/src/main/resources/static/pdfs/naming_rest_api_migration.pdf
deleted file mode 100644
index 68bb4729a300c72e71e852f8e0bbf75ab64fb3eb..0000000000000000000000000000000000000000
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