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-rw-r--r--test/editor.cxx1
1 files changed, 1 insertions, 0 deletions
diff --git a/test/editor.cxx b/test/editor.cxx
index 0bbe6bc6d..ba8c8e733 100644
--- a/test/editor.cxx
+++ b/test/editor.cxx
@@ -33,6 +33,7 @@
#endif
#include <FL/Fl.H>
+#include <FL/x.H> // for fl_open_callback
#include <FL/Fl_Group.H>
#include <FL/Fl_Double_Window.H>
#include <FL/fl_ask.H>