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diff --git a/src/C4Include.h b/src/C4Include.h
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index d4b0161..84ebd67 100644
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--- a/src/C4Include.h
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+++ b/src/C4Include.h
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@@ -63,6 +63,7 @@ constexpr bool SOLIDMASK_DEBUG = false;
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 #include <vector>
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 #include <unordered_set>
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 #include <math.h>
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+#include <limits>
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 #include "C4Prototypes.h"
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 #include "lib/C4Log.h"