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-rw-r--r--engines/sword25/math/vertex.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/engines/sword25/math/vertex.h b/engines/sword25/math/vertex.h
index 23afb374b8..24cd11a4e8 100644
--- a/engines/sword25/math/vertex.h
+++ b/engines/sword25/math/vertex.h
@@ -60,7 +60,7 @@
#define floorf(x) ((float)floor(x))
#define fabsf(x) ((float)fabs(x))
#define sqrtf(x) ((float)sqrt(x))
-#define atan2f(x) ((float)atan2(x))
+#define atan2f(x,y) ((float)atan2(x,y))
#endif
namespace Lua {