diff --git a/vendored/libfuse/lib/xalloc.hpp b/vendored/libfuse/lib/xalloc.hpp
index 5027eb35..22c41f6d 100644
--- a/vendored/libfuse/lib/xalloc.hpp
+++ b/vendored/libfuse/lib/xalloc.hpp
@@ -15,7 +15,7 @@ xstrdup_impl(const char     *s_,
 {
   char *p;
 
-  if(p == NULL)
+  if(s_ == NULL)
     {
       fprintf(stderr,
               "mergerfs: strdup failed - file: %s; line: %u\n",