diff --git a/Apps/Decimating/decimaterviewer.cc b/Apps/Decimating/decimaterviewer.cc
index f7bde039..a1939f97 100644
--- a/Apps/Decimating/decimaterviewer.cc
+++ b/Apps/Decimating/decimaterviewer.cc
@@ -33,7 +33,7 @@
 
 #include <iostream>
 #include <fstream>
-#include <getopt.h>
+#include <OpenMesh/Tools/Utils/getopt.h>
 #include <qapplication.h>
 #include <qmessagebox.h>