diff --git a/Doc/CMakeLists.txt b/Doc/CMakeLists.txt
index bd7c5312..521c6f79 100644
--- a/Doc/CMakeLists.txt
+++ b/Doc/CMakeLists.txt
@@ -1,15 +1,19 @@
-include (ACGDoxygen)
-
-if (TARGET doc)
-  acg_copy_after_build (doc "${CMAKE_CURRENT_SOURCE_DIR}/html" "${CMAKE_BINARY_DIR}/Build/${ACG_PROJECT_DATADIR}/Doc/html")
-endif ()
-
-# Add a documentation install target
-add_custom_target(doc-install COMMENT "Installing Documentation" VERBATIM )
-
-# Build Documentation before installing it
-add_dependencies(doc-install doc)
-
-if (TARGET doc-install)
-  acg_copy_after_build (doc-install "${CMAKE_BINARY_DIR}/Build/${ACG_PROJECT_DATADIR}/Doc/html"   "${CMAKE_INSTALL_PREFIX}/${ACG_PROJECT_DATADIR}/doc/html")
-endif()
+include (ACGDoxygen)
+
+IF (DOXYGEN_FOUND)
+
+  if (TARGET doc)
+    acg_copy_after_build (doc "${CMAKE_CURRENT_SOURCE_DIR}/html" "${CMAKE_BINARY_DIR}/Build/${ACG_PROJECT_DATADIR}/Doc/html")
+  endif ()
+
+  # Add a documentation install target
+  add_custom_target(doc-install COMMENT "Installing Documentation" VERBATIM )
+
+  # Build Documentation before installing it
+  add_dependencies(doc-install doc)
+
+  if (TARGET doc-install)
+    acg_copy_after_build (doc-install "${CMAKE_BINARY_DIR}/Build/${ACG_PROJECT_DATADIR}/Doc/html"   "${CMAKE_INSTALL_PREFIX}/${ACG_PROJECT_DATADIR}/doc/html")
+  endif()
+
+ENDIF(DOXYGEN_FOUND)
\ No newline at end of file