diff --git a/tests/libs/check_rtld_next_from_library.cpp b/tests/libs/check_rtld_next_from_library.cpp
index 45d8eea..fb15e2a 100644
--- a/tests/libs/check_rtld_next_from_library.cpp
+++ b/tests/libs/check_rtld_next_from_library.cpp
@@ -15,22 +15,23 @@
  */
 
 #include <dlfcn.h>
+#include <stdio.h>
 #include <stdlib.h>
 
-static void* g_libc_close_ptr;
+static void* g_libc_fclose_ptr;
 
-static void __attribute__((constructor)) __libc_close_lookup() {
-  g_libc_close_ptr = dlsym(RTLD_NEXT, "close");
+static void __attribute__((constructor)) __libc_fclose_lookup() {
+  g_libc_fclose_ptr = dlsym(RTLD_NEXT, "fclose");
 }
 
-// A libc function used for RTLD_NEXT
-// This function in not supposed to be called
-extern "C" int __attribute__((weak)) close(int) {
+// A libc function used for RTLD_NEXT.
+// This function in not supposed to be called.
+extern "C" int __attribute__((weak)) fclose(FILE*) {
   abort();
 }
 
-extern "C" void* get_libc_close_ptr() {
-  return g_libc_close_ptr;
+extern "C" void* get_libc_fclose_ptr() {
+  return g_libc_fclose_ptr;
 }