Index: src/core/credentials/transport/tls/ssl_utils.cc
--- src/core/credentials/transport/tls/ssl_utils.cc.orig
+++ src/core/credentials/transport/tls/ssl_utils.cc
@@ -52,7 +52,10 @@
 
 // -- Constants. --
 
-#if defined(GRPC_ROOT_PEM_PATH)
+//#if defined(GRPC_ROOT_PEM_PATH)
+#if defined(__OpenBSD__)
+static const char* installed_roots_path = "/etc/ssl/cert.pem";
+#elif defined(GRPC_ROOT_PEM_PATH)
 static const char* installed_roots_path = GRPC_ROOT_PEM_PATH;
 #elif defined(INSTALL_PREFIX)
 static const char* installed_roots_path =
