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-rw-r--r--opentrack-compat/options.cpp2
1 files changed, 2 insertions, 0 deletions
diff --git a/opentrack-compat/options.cpp b/opentrack-compat/options.cpp
index ba8c7925..be82ebdb 100644
--- a/opentrack-compat/options.cpp
+++ b/opentrack-compat/options.cpp
@@ -1,5 +1,7 @@
#include "options.hpp"
+#include <cmath>
+
namespace options
{