diff --git a/test/fixtures/keys/Makefile b/test/fixtures/keys/Makefile
index 88a041db49b542..964fb2f5f1451b 100644
--- a/test/fixtures/keys/Makefile
+++ b/test/fixtures/keys/Makefile
@@ -204,13 +204,13 @@ agent1-cert.pem: agent1-csr.pem ca1-cert.pem ca1-key.pem
 		-CAcreateserial \
 		-out agent1-cert.pem
 
-agent1-pfx.pem: agent1-cert.pem agent1-key.pem ca1-cert.pem
+agent1.pfx: agent1-cert.pem agent1-key.pem ca1-cert.pem
 	openssl pkcs12 -export \
 		-descert \
 		-in agent1-cert.pem \
 		-inkey agent1-key.pem \
 		-certfile ca1-cert.pem \
-		-out agent1-pfx.pem \
+		-out agent1.pfx \
 		-password pass:sample
 
 agent1-verify: agent1-cert.pem ca1-cert.pem
@@ -526,12 +526,12 @@ ec-cert.pem: ec-csr.pem ec-key.pem
 		-signkey ec-key.pem \
 		-out ec-cert.pem
 
-ec-pfx.pem: ec-cert.pem ec-key.pem
+ec.pfx: ec-cert.pem ec-key.pem
 	openssl pkcs12 -export \
 		-descert \
 		-in ec-cert.pem \
 		-inkey ec-key.pem \
-		-out ec-pfx.pem \
+		-out ec.pfx \
 		-password pass:
 
 dh512.pem:
diff --git a/test/fixtures/keys/agent1-pfx.pem b/test/fixtures/keys/agent1.pfx
similarity index 100%
rename from test/fixtures/keys/agent1-pfx.pem
rename to test/fixtures/keys/agent1.pfx
diff --git a/test/fixtures/keys/ec-pfx.pem b/test/fixtures/keys/ec-pfx.pem
deleted file mode 100644
index f5e76a76118e44..00000000000000
Binary files a/test/fixtures/keys/ec-pfx.pem and /dev/null differ
diff --git a/test/parallel/test-tls-multi-pfx.js b/test/parallel/test-tls-multi-pfx.js
index f750aec325c957..28cd945e3cf3b9 100644
--- a/test/parallel/test-tls-multi-pfx.js
+++ b/test/parallel/test-tls-multi-pfx.js
@@ -10,10 +10,10 @@ const fixtures = require('../common/fixtures');
 const options = {
   pfx: [
     {
-      buf: fixtures.readKey('agent1-pfx.pem'),
+      buf: fixtures.readKey('agent1.pfx'),
       passphrase: 'sample'
     },
-    fixtures.readKey('ec-pfx.pem')
+    fixtures.readKey('ec.pfx')
   ]
 };
 
diff --git a/test/parallel/test-tls-ocsp-callback.js b/test/parallel/test-tls-ocsp-callback.js
index cf05f6967a967b..2670fefd3dcf72 100644
--- a/test/parallel/test-tls-ocsp-callback.js
+++ b/test/parallel/test-tls-ocsp-callback.js
@@ -35,7 +35,7 @@ const assert = require('assert');
 
 const SSL_OP_NO_TICKET = require('crypto').constants.SSL_OP_NO_TICKET;
 
-const pfx = fixtures.readKey('agent1-pfx.pem');
+const pfx = fixtures.readKey('agent1.pfx');
 
 function test(testOptions, cb) {
 
diff --git a/test/parallel/test-tls-pfx-authorizationerror.js b/test/parallel/test-tls-pfx-authorizationerror.js
index 64b6e1485dc538..5461a19d20c481 100644
--- a/test/parallel/test-tls-pfx-authorizationerror.js
+++ b/test/parallel/test-tls-pfx-authorizationerror.js
@@ -11,7 +11,7 @@ const fixtures = require('../common/fixtures');
 const assert = require('assert');
 const tls = require('tls');
 
-const pfx = fixtures.readKey('agent1-pfx.pem');
+const pfx = fixtures.readKey('agent1.pfx');
 
 const server = tls
   .createServer(