diff --git a/src/interface/viewport.c b/src/interface/viewport.c
index 0a4878b9a4..6c40f26334 100644
--- a/src/interface/viewport.c
+++ b/src/interface/viewport.c
@@ -1118,7 +1118,7 @@ int scrolling_text_setup(rct_string_id string_id, uint16 scroll, uint16 scrollin
  * dx : height
  * edi : unknown
  */
-int sub_6629BC(int height, uint16 ax, uint32 image_id, uint32 edi){
+int sub_6629BC(int height, uint16 ax, uint32 image_id, int edi){
 	int eax = ax, ebx = 0, ecx = 0, edx = height, esi = 0, _edi = edi, ebp = image_id;
 
 	RCT2_CALLFUNC_X(0x006629BC, &eax, &ebx, &ecx, &edx, &esi, &_edi, &ebp);
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(
diff --git a/src/windows/themes.c b/src/windows/themes.c
index ae3d3ea222..9984df3f22 100644
--- a/src/windows/themes.c
+++ b/src/windows/themes.c
@@ -533,13 +533,13 @@ static void window_themes_mousedown(int widgetIndex, rct_window* w, rct_widget*
 
 		widget--;
 		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(
diff --git a/src/windows/title_command_editor.c b/src/windows/title_command_editor.c
index d1b282a291..7350a129f9 100644
--- a/src/windows/title_command_editor.c
+++ b/src/windows/title_command_editor.c
@@ -347,7 +347,7 @@ static void window_title_command_editor_mousedown(int widgetIndex, rct_window* w
 			num_items = gConfigTitleSequences.presets[gCurrentTitleSequence].num_saves;
 			for (i = 0; i < num_items; i++) {
 				gDropdownItemsFormat[i] = 2777;
-				gDropdownItemsArgs[i] = (uint64)&gConfigTitleSequences.presets[gCurrentTitleSequence].saves[i];
+				gDropdownItemsArgs[i] = (uint32)&gConfigTitleSequences.presets[gCurrentTitleSequence].saves[i];
 			}
 
 			window_dropdown_show_text_custom_width(
diff --git a/src/windows/title_editor.c b/src/windows/title_editor.c
index 1b3c22c50d..feb68f79e0 100644
--- a/src/windows/title_editor.c
+++ b/src/windows/title_editor.c
@@ -574,7 +574,7 @@ static void window_title_editor_mousedown(int widgetIndex, rct_window* w, rct_wi
 			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(
@@ -997,4 +997,4 @@ void window_title_editor_scrollpaint(rct_window *w, rct_drawpixelinfo *dpi, int
 			gfx_draw_string_left(dpi, 1170, (void*)RCT2_ADDRESS_COMMON_FORMAT_ARGS, w->colours[1], x + 5, y);
 		}
 	}
-}
\ No newline at end of file
+}