diff --git a/src/util-logopenfile.c b/src/util-logopenfile.c
index f5e836b472..90b42c3b7b 100644
--- a/src/util-logopenfile.c
+++ b/src/util-logopenfile.c
@@ -834,7 +834,7 @@ static bool LogFileThreadedName(
     }
 
     /* Check if basename has an extension */
-    char *dot = strrchr(base, '.');
+    const char *dot = strrchr(base, '.');
     if (dot) {
         char *tname = SCStrdup(original_name);
         if (!tname) {