diff --git a/source/tools/detect/generic/process_tree/process_tree.c b/source/tools/detect/generic/process_tree/process_tree.c
index 5b44f5b8a3a9a1f556d282971e1a33840a470505..404ad98d0499d9bf8a18816d2118ce4fdd664bd0 100644
--- a/source/tools/detect/generic/process_tree/process_tree.c
+++ b/source/tools/detect/generic/process_tree/process_tree.c
@@ -123,7 +123,8 @@ static int libbpf_print_fn(enum libbpf_print_level level,
  */
 static void extract_process_args(char *dst, char *src, int maxLen)
 {
-    for (int i = 0; i < maxLen - 1; i++)
+    int i;
+    for (i = 0; i < maxLen - 1; i++)
     {
         if (src[i] == '\0')
         {