diff --git a/src/auth.c b/src/auth.c
index 5a6c351..31167aa 100644
--- a/src/auth.c
+++ b/src/auth.c
@@ -238,8 +238,9 @@ char* certificate_auth()
 		return NULL;
 	}
 	
-	if (strcmp(get_config_string("//idpc:ocspCheck"), "true") == 0 && 
-				ocsp_check(getenv("SSL_CLIENT_CERT")) != 0) {
+	if (get_config_string("//idpc:ocspCheck") &&
+			strcmp(get_config_string("//idpc:ocspCheck"), "true") == 0 && 
+			ocsp_check(getenv("SSL_CLIENT_CERT")) != 0) {
 		fprintf(stderr, "ocsp check failed\n");
 		return NULL;
 	}