1 files changed, 2 insertions, 1 deletions
diff --git a/src/tsfn.cpp b/src/tsfn.cpp
index ea3b896d..32da09f2 100644
--- a/src/tsfn.cpp
+++ b/src/tsfn.cpp
@@ -1,6 +1,7 @@
 /* determine small t */
 #include <math.h>
-#include "projects.h"
+#include "proj.h"
+#include "proj_internal.h"
 
 double pj_tsfn(double phi, double sinphi, double e) {
     double denominator;