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-rw-r--r--src/rtodms.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/rtodms.c b/src/rtodms.c
index fa7801c5..fa5c3cd1 100644
--- a/src/rtodms.c
+++ b/src/rtodms.c
@@ -25,7 +25,7 @@ set_rtodms(int fract, int con_w) {
for (i = 0; i < fract; ++i)
RES *= 10.;
RES60 = RES * 60.;
- CONV = 180. * 3600. * RES / PI;
+ CONV = 180. * 3600. * RES / M_PI;
if (! con_w)
(void)sprintf(format,"%%dd%%d'%%.%df\"%%c", fract);
else