diff --git a/src/rct2.c b/src/rct2.c
index ccc67b8837..ef8940af49 100644
--- a/src/rct2.c
+++ b/src/rct2.c
@@ -21,6 +21,7 @@
 #pragma warning(disable : 4996) // GetVersionExA deprecated
 
 #include <setjmp.h>
+#include <time.h>
 #include "addresses.h"
 #include "audio/audio.h"
 #include "audio/mixer.h"
diff --git a/src/scenario.c b/src/scenario.c
index 2519c13962..582803e2c8 100644
--- a/src/scenario.c
+++ b/src/scenario.c
@@ -828,7 +828,7 @@ static void sub_674BCF()
 /**
  * Modifys the given S6 data so that ghost elements, rides with no track elements or unused banners / user strings are saved.
  */
-static scenario_fix_ghosts(rct_s6_data *s6)
+static void scenario_fix_ghosts(rct_s6_data *s6)
 {
 	// Remove all ghost elements
 	size_t mapElementTotalSize = MAX_MAP_ELEMENTS * sizeof(rct_map_element);
diff --git a/src/windows/options.c b/src/windows/options.c
index 5a26ddf43f..1aab0a5cdb 100644
--- a/src/windows/options.c
+++ b/src/windows/options.c
@@ -675,13 +675,13 @@ static void window_options_mousedown(int widgetIndex, rct_window*w, rct_widget*
 			num_items = gConfigThemes.num_presets;
 
 			gDropdownItemsFormat[0] = 2777;
-			gDropdownItemsArgs[0] = (uint64)&gConfigThemes.presets[1].name;
+			gDropdownItemsArgs[0] = (uint32)&gConfigThemes.presets[1].name;
 			gDropdownItemsFormat[1] = 2777;
-			gDropdownItemsArgs[1] = (uint64)&gConfigThemes.presets[0].name;
+			gDropdownItemsArgs[1] = (uint32)&gConfigThemes.presets[0].name;
 
 			for (i = 2; i < num_items; i++) {
 				gDropdownItemsFormat[i] = 2777;
-				gDropdownItemsArgs[i] = (uint64)&gConfigThemes.presets[i].name;
+				gDropdownItemsArgs[i] = (uint32)&gConfigThemes.presets[i].name;
 			}
 
 			window_dropdown_show_text_custom_width(
@@ -749,7 +749,7 @@ static void window_options_mousedown(int widgetIndex, rct_window*w, rct_widget*
 		case WIDX_LANGUAGE_DROPDOWN:
 			for (i = 1; i < LANGUAGE_COUNT; i++) {
 				gDropdownItemsFormat[i - 1] = 2777;
-				gDropdownItemsArgs[i - 1] = (sint64)language_names[i];
+				gDropdownItemsArgs[i - 1] = (sint32)language_names[i];
 			}
 			window_options_show_dropdown(w, widget, LANGUAGE_COUNT - 1);
 			gDropdownItemsChecked = 1 << (gCurrentLanguage - 1);
@@ -827,7 +827,7 @@ static void window_options_mousedown(int widgetIndex, rct_window*w, rct_widget*
 
 			for (i = 0; i < num_items; i++) {
 				gDropdownItemsFormat[i] = 2777;
-				gDropdownItemsArgs[i] = (uint64)&gConfigTitleSequences.presets[i].name;
+				gDropdownItemsArgs[i] = (uint32)&gConfigTitleSequences.presets[i].name;
 			}
 
 			window_dropdown_show_text_custom_width(