diff --git a/PocoDoc/cfg/mkdoc-poco.xml b/PocoDoc/cfg/mkdoc-poco.xml
index 6ea368501..ba0d3a57e 100644
--- a/PocoDoc/cfg/mkdoc-poco.xml
+++ b/PocoDoc/cfg/mkdoc-poco.xml
@@ -44,7 +44,7 @@
 			${PocoBuild}/*/doc/images
 		</resources>
 		<compiler>
-			<exec>g++</exec>
+			<exec>${CXX}</exec>
 			<options>
 				${Includes},
 				-I/usr/local/mysql/include,
diff --git a/PocoDoc/cfg/mkdocumentation.xml b/PocoDoc/cfg/mkdocumentation.xml
index c2123c799..cc3ef3126 100644
--- a/PocoDoc/cfg/mkdocumentation.xml
+++ b/PocoDoc/cfg/mkdocumentation.xml
@@ -41,7 +41,7 @@
 			${PocoBuild}/*/doc/images
 		</resources>
 		<compiler>
-			<exec>g++</exec>
+			<exec>${CXX}</exec>
 			<options>
 				${Includes},
 				-I/usr/local/mysql/include,