diff --git a/src/Airports/.cvsignore b/src/Airports/.cvsignore
index 327ffbd02..e43cffa22 100644
--- a/src/Airports/.cvsignore
+++ b/src/Airports/.cvsignore
@@ -1,5 +1,6 @@
 .deps
 Makefile
 Makefile.in
+calc_loc
 genrunways
 gensimple