diff --git a/include/types/global.h b/include/types/global.h
index b55481bfc..bd8a06e81 100644
--- a/include/types/global.h
+++ b/include/types/global.h
@@ -97,6 +97,9 @@ struct global {
 		int chksize;       /* check buffer size in bytes, defaults to BUFSIZE */
 		int pipesize;      /* pipe size in bytes, system defaults if zero */
 		int max_http_hdr;  /* max number of HTTP headers, use MAX_HTTP_HDR if zero */
+#ifdef USE_OPENSSL
+		int sslcachesize;  /* SSL cache size in session, defaults to 20000 */
+#endif
 	} tune;
 	struct {
 		char *prefix;           /* path prefix of unix bind socket */
diff --git a/src/cfgparse.c b/src/cfgparse.c
index ca88e8684..dcc019b94 100644
--- a/src/cfgparse.c
+++ b/src/cfgparse.c
@@ -526,6 +526,16 @@ int cfg_parse_global(const char *file, int linenum, char **args, int kwm)
 		}
 		global.tune.chksize = atol(args[1]);
 	}
+#ifdef USE_OPENSSL
+	else if (!strcmp(args[0], "tune.sslcachesize")) {
+		if (*(args[1]) == 0) {
+			Alert("parsing [%s:%d] : '%s' expects an integer argument.\n", file, linenum, args[0]);
+			err_code |= ERR_ALERT | ERR_FATAL;
+			goto out;
+		}
+		global.tune.sslcachesize = atol(args[1]);
+	}
+#endif
 	else if (!strcmp(args[0], "tune.bufsize")) {
 		if (*(args[1]) == 0) {
 			Alert("parsing [%s:%d] : '%s' expects an integer argument.\n", file, linenum, args[0]);
@@ -6704,7 +6714,7 @@ int check_config_validity()
 				SSL_CTX_set_options(listener->ssl_ctx.ctx, ssloptions);
 				SSL_CTX_set_mode(listener->ssl_ctx.ctx, sslmode);
 				SSL_CTX_set_verify(listener->ssl_ctx.ctx, SSL_VERIFY_NONE, NULL);
-				if (shared_context_init(0) < 0) {
+				if (shared_context_init(global.tune.sslcachesize) < 0) {
 					Alert("Unable to allocate SSL session cache.\n");
 					cfgerr++;
 					goto skip_ssl;
diff --git a/src/haproxy.c b/src/haproxy.c
index 764e30f40..adf2614f3 100644
--- a/src/haproxy.c
+++ b/src/haproxy.c
@@ -125,6 +125,9 @@ struct global global = {
 		.bufsize = BUFSIZE,
 		.maxrewrite = MAXREWRITE,
 		.chksize = BUFSIZE,
+#ifdef USE_OPENSSL
+		.sslcachesize = 20000,
+#endif
 	},
 	/* others NULL OK */
 };