Small fix in main.c.

2 files changed, 4 insertions, 1 deletions

diff --git a/ChangeLog b/ChangeLog
index ebd16b0d..1dac0a9b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -3,6 +3,9 @@
 	* array.c (asort_actual): Initialize `value' to avoid
 	compiler complaints. Thanks to Michal Jaegermann
 	for the report.
+	* main.c (usage): Cast array subscript to int to silence
+	a compiler warning. Thanks to "Jannick" <thirdedition@gmx.net>
+	for the report.
 
 2023-04-14         Arnold D. Robbins     <arnold@skeeve.com>
 
diff --git a/main.c b/main.c
index ba6eda3d..c48feafa 100644
--- a/main.c
+++ b/main.c
@@ -689,7 +689,7 @@ or by using a web forum such as Stack Overflow.\n\n"), fp);
 
 	// 5.2.60 is beta release on master, will become 5.3.0.
 	// 5.2.2a is beta release on stable, will become 5.2.3.
-	if (patchlevel >= 60 || isalpha(PACKAGE_VERSION[strlen(PACKAGE_VERSION)-1]))
+	if (patchlevel >= 60 || isalpha((int) PACKAGE_VERSION[strlen(PACKAGE_VERSION)-1]))
 		url = beta_url;
 	else
 		url = gnu_url;