diff --git a/include/db_lib/db_types.hpp b/include/db_lib/db_types.hpp
index 0e648d1..bf1b4db 100644
--- a/include/db_lib/db_types.hpp
+++ b/include/db_lib/db_types.hpp
@@ -31,16 +31,16 @@ namespace db {
 
 // credentials for database access
 struct db_credentials_t {
-    std::string server;
-    bool server_override;
-    int port;
-    bool port_override;
-    std::string uname;
-    bool uname_override;
-    std::string pwd;
-    bool pwd_override;
-    std::string dbase;
-    bool dbase_override;
+    std::string server = "";
+    bool server_override = false;
+    int port = 0;
+    bool port_override = false;
+    std::string uname = "";
+    bool uname_override = false;
+    std::string pwd = "";
+    bool pwd_override = false;
+    std::string dbase = "";
+    bool dbase_override = false;
     int version;
 };