diff --git a/WiFiManager.cpp b/WiFiManager.cpp
index 9f529cf..00af662 100644
--- a/WiFiManager.cpp
+++ b/WiFiManager.cpp
@@ -76,19 +76,26 @@ const char* WiFiManagerParameter::getCustomHTML() {
   return _customHTML;
 }
 
-void WiFiManager::addParameter(WiFiManagerParameter *p) {
-  if(_paramsCount + 1 > WIFI_MANAGER_MAX_PARAMS)
-  {
-    //Max parameters exceeded!
-    DEBUG_WM("WIFI_MANAGER_MAX_PARAMS exceeded, increase number (in WiFiManager.h) before adding more parameters!");
-    DEBUG_WM("Skipping parameter with ID:");
-    DEBUG_WM(p->getID());
-    return;
+
+bool WiFiManager::addParameter(WiFiManagerParameter *p) {
+  if(_paramsCount + 1 > _max_params){
+    // rezise the params array
+    _max_params += WIFI_MANAGER_MAX_PARAMS;
+    DEBUG_WM(F("Increasing _max_params to:"));
+    DEBUG_WM(_max_params);
+    WiFiManagerParameter** new_params = (WiFiManagerParameter**)realloc(_params, _max_params * sizeof(WiFiManagerParameter*));
+    if (new_params != NULL) {
+      _params = new_params;
+    } else {
+      DEBUG_WM("ERROR: failed to realloc params, size not increased!");
+      return false;
+    }
   }
   _params[_paramsCount] = p;
   _paramsCount++;
   DEBUG_WM("Adding parameter");
   DEBUG_WM(p->getID());
+  return true;
 }
 
 // constructors
@@ -100,12 +107,24 @@ WiFiManager::WiFiManager():_debugPort(Serial) {
   if(_debug) debugPlatformInfo();
   _usermode = WiFi.getMode();
   WiFi.persistent(false); // disable persistent so scannetworks and mode switching do not cause overwrites
+
+  // parameters
+  _max_params = WIFI_MANAGER_MAX_PARAMS;
+  _params = (WiFiManagerParameter**)malloc(_max_params * sizeof(WiFiManagerParameter*));
+
 }
 
 // destructor
 WiFiManager::~WiFiManager() {
   if(_userpersistent) WiFi.persistent(true); // reenable persistent, there is no getter we rely on _userpersistent
   WiFi.mode(_usermode);
+
+  // parameters
+  if (_params != NULL){
+    DEBUG_WM(F("freeing allocated params!"));
+    free(_params);
+  }
+
   DEBUG_WM(F("unloading"));
 }
 
diff --git a/WiFiManager.h b/WiFiManager.h
index 72a7b47..15ae705 100644
--- a/WiFiManager.h
+++ b/WiFiManager.h
@@ -144,8 +144,8 @@ class WiFiManager
     void          setAPCallback( void (*func)(WiFiManager*) );
     //called when settings have been changed and connection was successful
     void          setSaveConfigCallback( void (*func)(void) );
-    //adds a custom parameter
-    void          addParameter(WiFiManagerParameter *p);
+    //adds a custom parameter, returns false on failure
+    bool          addParameter(WiFiManagerParameter *p);
     //if this is set, it will exit after config, even if connection is unsuccessful.
     void          setBreakAfterConfig(boolean shouldBreak);
     //if this is set, portal will be blocking and wait until save or exit, is false user must manually process to handle config portal
@@ -271,7 +271,8 @@ class WiFiManager
     void (*_savecallback)(void) = NULL;
 
     Stream& _debugPort; // debug output stream ref
-    WiFiManagerParameter* _params[WIFI_MANAGER_MAX_PARAMS];
+    int                    _max_params;
+    WiFiManagerParameter** _params;
 
     template <typename Generic>
     void          DEBUG_WM(Generic text);