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-rw-r--r--src/msfn.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/msfn.cpp b/src/msfn.cpp
index cf6accf1..74506317 100644
--- a/src/msfn.cpp
+++ b/src/msfn.cpp
@@ -1,7 +1,7 @@
/* determine constant small m */
#include <math.h>
#include "proj.h"
-#include "projects.h"
+#include "proj_internal.h"
double
pj_msfn(double sinphi, double cosphi, double es) {
return (cosphi / sqrt (1. - es * sinphi * sinphi));