Index: /issm/trunk-jpl/m4/issm_options.m4
===================================================================
--- /issm/trunk-jpl/m4/issm_options.m4	(revision 24786)
+++ /issm/trunk-jpl/m4/issm_options.m4	(revision 24787)
@@ -1473,6 +1473,6 @@
 	dnl PROJ{{{
 	AC_ARG_WITH(
-		[proj4-dir],
-		AS_HELP_STRING([--with-proj4-dir=DIR], [PROJ root directory]),
+		[proj-dir],
+		AS_HELP_STRING([--with-proj-dir=DIR], [PROJ root directory]),
 		[PROJ_ROOT=${withval}],
 		[PROJ_ROOT="no"]