diff --git a/libs/libc/misc/lib_execinfo.c b/libs/libc/misc/lib_execinfo.c
index bee7f56075..f963aa760c 100644
--- a/libs/libc/misc/lib_execinfo.c
+++ b/libs/libc/misc/lib_execinfo.c
@@ -67,7 +67,7 @@ FAR char **backtrace_symbols(FAR void *const *buffer, int size)
   syms = backtrace_malloc(buffer, size);
   if (syms != NULL)
     {
-      buf = syms[size];
+      buf = (FAR char *)&syms[size];
       for (i = 0; i < size; i++)
         {
           syms[i] = buf;