diff --git a/ext/openssl/tests/001.phpt b/ext/openssl/tests/001.phpt
index 4ca9970bca2..d62612b7347 100644
--- a/ext/openssl/tests/001.phpt
+++ b/ext/openssl/tests/001.phpt
@@ -24,7 +24,7 @@ if ($privkey === false)
 	die("failed to create private key");
 
 $passphrase = "banana";
-$key_file_name = tempnam("/tmp", "ssl");
+$key_file_name = tempnam(sys_get_temp_dir(), "ssl");
 if ($key_file_name === false)
 	die("failed to get a temporary filename!");
 
diff --git a/ext/openssl/tests/openssl_pkcs7_decrypt_basic.phpt b/ext/openssl/tests/openssl_pkcs7_decrypt_basic.phpt
index 5589abb0396..27ca4d232ca 100644
--- a/ext/openssl/tests/openssl_pkcs7_decrypt_basic.phpt
+++ b/ext/openssl/tests/openssl_pkcs7_decrypt_basic.phpt
@@ -6,10 +6,10 @@ openssl_pkcs7_decrypt() tests
 <?php
 $infile = dirname(__FILE__) . "/cert.crt";
 $privkey = "file://" . dirname(__FILE__) . "/private_rsa_1024.key";
-$encrypted = tempnam("/tmp", "ssl");
+$encrypted = tempnam(sys_get_temp_dir(), "ssl");
 if ($encrypted === false)
 	die("failed to get a temporary filename!");
-$outfile = tempnam("/tmp", "ssl");
+$outfile = tempnam(sys_get_temp_dir(), "ssl");
 if ($outfile === false) {
 	unlink($outfile);
 	die("failed to get a temporary filename!");
diff --git a/ext/openssl/tests/openssl_pkcs7_encrypt_basic.phpt b/ext/openssl/tests/openssl_pkcs7_encrypt_basic.phpt
index 5f74f97b0cf..09a7093b8d5 100644
--- a/ext/openssl/tests/openssl_pkcs7_encrypt_basic.phpt
+++ b/ext/openssl/tests/openssl_pkcs7_encrypt_basic.phpt
@@ -5,10 +5,10 @@ openssl_pkcs7_encrypt() tests
 --FILE--
 <?php
 $infile = dirname(__FILE__) . "/cert.crt";
-$outfile = tempnam("/tmp", "ssl");
+$outfile = tempnam(sys_get_temp_dir(), "ssl");
 if ($outfile === false)
 	die("failed to get a temporary filename!");
-$outfile2 = tempnam("/tmp", "ssl");
+$outfile2 = tempnam(sys_get_temp_dir(), "ssl");
 if ($outfile2 === false)
 	die("failed to get a temporary filename!");
 
diff --git a/ext/openssl/tests/openssl_pkcs7_sign_basic.phpt b/ext/openssl/tests/openssl_pkcs7_sign_basic.phpt
index ac8edf19a95..e06553f4b46 100644
--- a/ext/openssl/tests/openssl_pkcs7_sign_basic.phpt
+++ b/ext/openssl/tests/openssl_pkcs7_sign_basic.phpt
@@ -5,7 +5,7 @@ openssl_pkcs7_sign() tests
 --FILE--
 <?php
 $infile = dirname(__FILE__) . "/cert.crt";
-$outfile = tempnam("/tmp", "ssl");
+$outfile = tempnam(sys_get_temp_dir(), "ssl");
 if ($outfile === false) {
 	die("failed to get a temporary filename!");
 }