diff --git a/src/lib/common/maps.c b/src/lib/common/maps.c
index 47cb5fa5..0c6c9109 100644
--- a/src/lib/common/maps.c
+++ b/src/lib/common/maps.c
@@ -420,7 +420,7 @@ int
 display_region_map(int bmap, int unit_type, coord curx, coord cury,
 		   char *arg)
 {
-    char coordinates[80], *cp;
+    char coordinates[80];
     char *map_flag_arg;
 
     if (!arg || !*arg) {