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-rw-r--r--src/projects.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/projects.h b/src/projects.h
index a526cfe3..dcd5b652 100644
--- a/src/projects.h
+++ b/src/projects.h
@@ -134,6 +134,7 @@ extern double hypot(double, double);
/* library errors */
#define PJD_ERR_GEOCENTRIC -45
#define PJD_ERR_AXIS -47
+#define PJD_ERR_GRID_AREA -48
#define USE_PROJUV