diff --git a/kernel/trace/trace_probe.c b/kernel/trace/trace_probe.c
index 804442b2f7d2..cfb710095f65 100644
--- a/kernel/trace/trace_probe.c
+++ b/kernel/trace/trace_probe.c
@@ -2316,7 +2316,7 @@ const char **traceprobe_expand_meta_args(int argc, const char *argv[],
 	else
 		*new_argc = argc;
 
-	new_argv = kcalloc(*new_argc, sizeof(char *), GFP_KERNEL);
+	new_argv = kcalloc(*new_argc, sizeof(*new_argv), GFP_KERNEL);
 	if (!new_argv)
 		return ERR_PTR(-ENOMEM);