diff --git a/Makefile b/Makefile
index 92031451..8b2249f1 100644
--- a/Makefile
+++ b/Makefile
@@ -67,6 +67,7 @@ LIB_SOURCES =	src/libhttp.c					\
 		src/httplib_set_sock_timeout.c			\
 		src/httplib_set_tcp_nodelay.c			\
 		src/httplib_ssl_get_protocol.c			\
+		src/httplib_ssl_use_pem_file.c			\
 		src/httplib_start.c				\
 		src/httplib_stop.c				\
 		src/httplib_uninitialize_ssl.c			\
diff --git a/src/httplib_ssl_use_pem_file.c b/src/httplib_ssl_use_pem_file.c
new file mode 100644
index 00000000..3f932a36
--- /dev/null
+++ b/src/httplib_ssl_use_pem_file.c
@@ -0,0 +1,66 @@
+/* 
+ * Copyright (C) 2016 Lammert Bies
+ * Copyright (c) 2013-2016 the Civetweb developers
+ * Copyright (c) 2004-2013 Sergey Lyubka
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+
+
+#include "libhttp-private.h"
+
+
+
+/*
+ * int XX_httplib_ssl_use_pem_file( struct mg_context *ctx, const char *pem );
+ *
+ * The function XX_httplib_ssl_use_pem_file() tries to use a certificate which
+ * is passed as a parameter with the filename of the certificate.
+ */
+
+#if ! defined(NO_SSL)
+
+int XX_httplib_ssl_use_pem_file( struct mg_context *ctx, const char *pem ) {
+
+	if (SSL_CTX_use_certificate_file(ctx->ssl_ctx, pem, 1) == 0) {
+		mg_cry( XX_httplib_fc(ctx), "%s: cannot open certificate file %s: %s", __func__, pem, XX_httplib_ssl_error());
+		return 0;
+	}
+
+	/* could use SSL_CTX_set_default_passwd_cb_userdata */
+	if (SSL_CTX_use_PrivateKey_file(ctx->ssl_ctx, pem, 1) == 0) {
+		mg_cry( XX_httplib_fc(ctx), "%s: cannot open private key file %s: %s", __func__, pem, XX_httplib_ssl_error());
+		return 0;
+	}
+
+	if (SSL_CTX_check_private_key(ctx->ssl_ctx) == 0) {
+		mg_cry( XX_httplib_fc(ctx), "%s: certificate and private key do not match: %s", __func__, pem);
+		return 0;
+	}
+
+	if (SSL_CTX_use_certificate_chain_file(ctx->ssl_ctx, pem) == 0) {
+		mg_cry( XX_httplib_fc(ctx), "%s: cannot use certificate chain file %s: %s", __func__, pem, XX_httplib_ssl_error());
+		return 0;
+	}
+	return 1;
+
+}  /* XX_httplib_ssl_use_pem_file */
+
+#endif /* !NO_SSL */
diff --git a/src/libhttp.c b/src/libhttp.c
index 6586307d..1d70af41 100644
--- a/src/libhttp.c
+++ b/src/libhttp.c
@@ -8728,31 +8728,4 @@ int XX_httplib_initialize_ssl( struct mg_context *ctx ) {
 
 }  /* XX_httplib_initialize_ssl */
 
-
-int XX_httplib_ssl_use_pem_file( struct mg_context *ctx, const char *pem ) {
-
-	if (SSL_CTX_use_certificate_file(ctx->ssl_ctx, pem, 1) == 0) {
-		mg_cry( XX_httplib_fc(ctx), "%s: cannot open certificate file %s: %s", __func__, pem, XX_httplib_ssl_error());
-		return 0;
-	}
-
-	/* could use SSL_CTX_set_default_passwd_cb_userdata */
-	if (SSL_CTX_use_PrivateKey_file(ctx->ssl_ctx, pem, 1) == 0) {
-		mg_cry( XX_httplib_fc(ctx), "%s: cannot open private key file %s: %s", __func__, pem, XX_httplib_ssl_error());
-		return 0;
-	}
-
-	if (SSL_CTX_check_private_key(ctx->ssl_ctx) == 0) {
-		mg_cry( XX_httplib_fc(ctx), "%s: certificate and private key do not match: %s", __func__, pem);
-		return 0;
-	}
-
-	if (SSL_CTX_use_certificate_chain_file(ctx->ssl_ctx, pem) == 0) {
-		mg_cry( XX_httplib_fc(ctx), "%s: cannot use certificate chain file %s: %s", __func__, pem, XX_httplib_ssl_error());
-		return 0;
-	}
-	return 1;
-
-}  /* XX_httplib_ssl_use_pem_file */
-
 #endif /* !NO_SSL */