diff -r cf91a3a20d0d -r 7b134c27fadb main/manual.c
--- a/main/manual.c	Sun May 19 21:05:07 2019 +0200
+++ b/main/manual.c	Mon Jul 01 23:15:49 2019 +0200
@@ -40,22 +40,22 @@
 		break;
 
 	case MAIN_MANUAL_MAIN:
-		TopMessage("Handbediening");
-		Buttons_Add(  5, 200, 60, 40, "Stop", 0);
+		TopMessage((char *)"Handbediening");
+		Buttons_Add(  5, 200, 60, 40, (char *)"Stop", 0);
 		Buttons[0].dark = true;
 		uint8_t i = 1;
 		if (_ManualMLT) {
 		    MLT_info(71, 26, false);
-		    Buttons_Add(  5,  26, 60, 40, "+sp"  , i++);
-		    Buttons_Add(255,  26, 60, 40, "-sp"  , i++);
-		    Buttons_Add(  5,  76, 60, 40, "Pomp" , i++);
-		    Buttons_Add(255,  76, 60, 40, "Aan"  , i++);
+		    Buttons_Add(  5,  26, 60, 40, (char *)"+sp"  , i++);
+		    Buttons_Add(255,  26, 60, 40, (char *)"-sp"  , i++);
+		    Buttons_Add(  5,  76, 60, 40, (char *)"Pomp" , i++);
+		    Buttons_Add(255,  76, 60, 40, (char *)"Aan"  , i++);
 		}
 		if (_ManualHLT) {
 		    HLT_info(71,150, false, false);
-		    Buttons_Add(  5, 150, 60, 40, "+sp"  , i++);
-		    Buttons_Add(255, 150, 60, 40, "-sp"  , i++);
-		    Buttons_Add(255, 200, 60, 40, "Aan"  , i);
+		    Buttons_Add(  5, 150, 60, 40, (char *)"+sp"  , i++);
+		    Buttons_Add(255, 150, 60, 40, (char *)"-sp"  , i++);
+		    Buttons_Add(255, 200, 60, 40, (char *)"Aan"  , i);
 		}
 		Buttons_Show();
 		break;
@@ -77,12 +77,12 @@
     switch (Main_Screen) {
 	case MAIN_MANUAL_INIT:
 		_ManualHLT = _ManualMLT = false;
-		Buttons_Add( 40, 100, 80, 40, "Ja", 0);
-		Buttons_Add(200, 100, 80, 40, "Nee",  1);
+		Buttons_Add( 40, 100, 80, 40, (char *)"Ja", 0);
+		Buttons_Add(200, 100, 80, 40, (char *)"Nee",  1);
 		Buttons_Show();
 
 		if ((equipment.SSR2 == SSR2_HLT_SHARE) || (equipment.SSR2 == SSR2_HLT_IND)) {
-		    TopMessage("Spoelwater ketel?");
+		    TopMessage((char *)"Spoelwater ketel?");
 		    SoundPlay(SOUND_Prompt);
 		    loop = true;
 		    while (loop) {
@@ -101,7 +101,7 @@
 		    }
 		}
 
-		TopMessage("Maisch/Kook ketel?");
+		TopMessage((char *)"Maisch/Kook ketel?");
 		SoundPlay(SOUND_Prompt);
 		loop = true;
 		while (loop) {
@@ -202,11 +202,11 @@
 				    if (xSemaphoreTake(xSemaphoreDriver, 10) == pdTRUE) {
 					if (driver_state->hlt_mode == HLT_MODE_BANG) {
 					    driver_state->hlt_mode = HLT_MODE_OFF;
-					    Buttons_Add(255, 200, 60, 40, "Aan"  , 3);
+					    Buttons_Add(255, 200, 60, 40, (char *)"Aan"  , 3);
 					    ESP_LOGI(TAG, "HLT turned off");
 					} else {
 					    driver_state->hlt_mode = HLT_MODE_BANG;
-					    Buttons_Add(255, 200, 60, 40, "Uit"  , 3);
+					    Buttons_Add(255, 200, 60, 40, (char *)"Uit"  , 3);
 					    ESP_LOGI(TAG, "HLT turned on");
 					}
 					xSemaphoreGive(xSemaphoreDriver);
@@ -218,11 +218,11 @@
 		    case 4:	if (xSemaphoreTake(xSemaphoreDriver, 10) == pdTRUE) {
 				    if (driver_state->mlt_mode == MLT_MODE_PID) {
 					driver_state->mlt_mode = MLT_MODE_OFF;
-					Buttons_Add(255,  76, 60, 40, "Aan"  , 4);
+					Buttons_Add(255,  76, 60, 40, (char *)"Aan"  , 4);
 					ESP_LOGI(TAG, "MLT turned off");
 				    } else {
 					driver_state->mlt_mode = MLT_MODE_PID;
-					Buttons_Add(255,  76, 60, 40, "Uit"  , 4);
+					Buttons_Add(255,  76, 60, 40, (char *)"Uit"  , 4);
 					ESP_LOGI(TAG, "MLT turned on");
 				    }
 				    xSemaphoreGive(xSemaphoreDriver);
@@ -245,11 +245,11 @@
 		    case 7:	if (xSemaphoreTake(xSemaphoreDriver, 10) == pdTRUE) {
 				    if (driver_state->hlt_mode == HLT_MODE_BANG) {
 					driver_state->hlt_mode = HLT_MODE_OFF;
-					Buttons_Add(255, 200, 60, 40, "Aan"  , 7);
+					Buttons_Add(255, 200, 60, 40, (char *)"Aan"  , 7);
 					ESP_LOGI(TAG, "HLT turned off");
 				    } else {
 					driver_state->hlt_mode = HLT_MODE_BANG;
-					Buttons_Add(255, 200, 60, 40, "Uit"  , 7);
+					Buttons_Add(255, 200, 60, 40, (char *)"Uit"  , 7);
 					ESP_LOGI(TAG, "HLT turned on");
 				    }
 				    xSemaphoreGive(xSemaphoreDriver);