diff --git a/libexec/rtld-elf/tests/common.h b/libexec/rtld-elf/tests/common.h
--- a/libexec/rtld-elf/tests/common.h
+++ b/libexec/rtld-elf/tests/common.h
@@ -37,7 +37,7 @@
 
 void	try_to_run(int binary, int expected_exit_status, char * const *env,
 	    const char *expected_out, const char *expected_err);
-int	opendir(const char *name);
+int	opendir_fd(const char *name);
 int	opendirat(int parent, const char *name);
 
 #endif /* _LD_COMMON_H_ */
diff --git a/libexec/rtld-elf/tests/common.c b/libexec/rtld-elf/tests/common.c
--- a/libexec/rtld-elf/tests/common.c
+++ b/libexec/rtld-elf/tests/common.c
@@ -67,7 +67,7 @@
 }
 
 int
-opendir(const char *name)
+opendir_fd(const char *name)
 {
 
 	return open(name, O_RDONLY | O_DIRECTORY);
diff --git a/libexec/rtld-elf/tests/ld_library_pathfds.c b/libexec/rtld-elf/tests/ld_library_pathfds.c
--- a/libexec/rtld-elf/tests/ld_library_pathfds.c
+++ b/libexec/rtld-elf/tests/ld_library_pathfds.c
@@ -159,12 +159,12 @@
 setup(struct descriptors *dp, const atf_tc_t *tc)
 {
 
-	dp->testdir = opendir(atf_tc_get_config_var(tc, "srcdir"));
+	dp->testdir = opendir_fd(atf_tc_get_config_var(tc, "srcdir"));
 	ATF_REQUIRE(dp->testdir >= 0);
 	ATF_REQUIRE(
 	    (dp->binary = openat(dp->testdir, TARGET_ELF_NAME, O_RDONLY)) >= 0);
 
-	ATF_REQUIRE((dp->root = opendir("/")) >= 0);
+	ATF_REQUIRE((dp->root = opendir_fd("/")) >= 0);
 	ATF_REQUIRE((dp->etc = opendirat(dp->root, "etc")) >= 0);
 	ATF_REQUIRE((dp->usr = opendirat(dp->root, "usr")) >= 0);
 }
diff --git a/libexec/rtld-elf/tests/ld_preload_fds.c b/libexec/rtld-elf/tests/ld_preload_fds.c
--- a/libexec/rtld-elf/tests/ld_preload_fds.c
+++ b/libexec/rtld-elf/tests/ld_preload_fds.c
@@ -39,7 +39,7 @@
 {
 	int testdir;
 
-	testdir = opendir(atf_tc_get_config_var(tc, "srcdir"));
+	testdir = opendir_fd(atf_tc_get_config_var(tc, "srcdir"));
 	ATF_REQUIRE(testdir >= 0);
 
 	binaryfd = openat(testdir, TARGET_ELF_NAME, O_RDONLY);