diff --git a/cmake/ACGDoxygen.cmake b/cmake/ACGDoxygen.cmake
index ee018f3fdfad5642b9a04ca162af3740059c2107..b43d1cb8d403f3f1d0c19b44fb2ad9aee984febd 100644
--- a/cmake/ACGDoxygen.cmake
+++ b/cmake/ACGDoxygen.cmake
@@ -18,8 +18,10 @@
 # author Jan Woetzel 2004-2006
 # www.mip.informatik.uni-kiel.de/~jw
 
-
-FIND_PACKAGE(Doxygen)
+# Guard the finder here, to avoid calling it multiple times
+IF (NOT DOXYGEN_FOUND)
+  FIND_PACKAGE(Doxygen)
+endif()
 
 IF (DOXYGEN_FOUND)