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-rw-r--r--src/projections/oea.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/projections/oea.cpp b/src/projections/oea.cpp
index ac0f643f..cbedf0c0 100644
--- a/src/projections/oea.cpp
+++ b/src/projections/oea.cpp
@@ -2,7 +2,7 @@
#include <errno.h>
#include "proj.h"
#include "proj_internal.h"
-#include "proj_math.h"
+#include <math.h>
PROJ_HEAD(oea, "Oblated Equal Area") "\n\tMisc Sph\n\tn= m= theta=";