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-rw-r--r--src/Legend.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/Legend.cpp b/src/Legend.cpp
index 1ef833e..5be8545 100644
--- a/src/Legend.cpp
+++ b/src/Legend.cpp
@@ -10,6 +10,7 @@
#include <gdkmm/color.h>
#include <glibmm/signalproxy.h>
+#include <glibmm/ustring.h>
#include <gtkmm/box.h>
#include <gtkmm/colorbutton.h>
#include <gtkmm/label.h>