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-rw-r--r--src/client/imagefilters.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/client/imagefilters.cpp b/src/client/imagefilters.cpp
index 97ad094e5..b62e336f7 100644
--- a/src/client/imagefilters.cpp
+++ b/src/client/imagefilters.cpp
@@ -21,6 +21,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
#include <cmath>
#include <cassert>
#include <vector>
+#include <algorithm>
// Simple 2D bitmap class with just the functionality needed here
class Bitmap {