diff --git a/src/libui_sdl/DlgEmuSettings.cpp b/src/libui_sdl/DlgEmuSettings.cpp
index 1097ec50..8cb2ccc7 100644
--- a/src/libui_sdl/DlgEmuSettings.cpp
+++ b/src/libui_sdl/DlgEmuSettings.cpp
@@ -65,7 +65,7 @@ void OnOk(uiButton* btn, void* blarg)
 
 void Open()
 {
-    win = uiNewWindow("Emu settings - melonDS", 300, 200, 0);
+    win = uiNewWindow("Emu settings - melonDS", 300, 200, 0, 0);
     uiWindowSetMargined(win, 1);
     uiWindowOnClosing(win, OnCloseWindow, NULL);
 
diff --git a/src/libui_sdl/DlgInputConfig.cpp b/src/libui_sdl/DlgInputConfig.cpp
index 2d26001a..43482612 100644
--- a/src/libui_sdl/DlgInputConfig.cpp
+++ b/src/libui_sdl/DlgInputConfig.cpp
@@ -283,7 +283,7 @@ void Open()
     memcpy(keymap, Config::KeyMapping, sizeof(int)*12);
     memcpy(joymap, Config::JoyMapping, sizeof(int)*12);
 
-    win = uiNewWindow("Input config - melonDS", 600, 400, 0);
+    win = uiNewWindow("Input config - melonDS", 600, 400, 0, 0);
     uiWindowSetMargined(win, 1);
     uiWindowOnClosing(win, OnCloseWindow, NULL);
     uiWindowOnGetFocus(win, OnGetFocus, NULL);
diff --git a/src/libui_sdl/libui/ui.h b/src/libui_sdl/libui/ui.h
index 84a71c35..e78de5ec 100644
--- a/src/libui_sdl/libui/ui.h
+++ b/src/libui_sdl/libui/ui.h
@@ -115,7 +115,7 @@ _UI_EXTERN void uiWindowSetChild(uiWindow *w, uiControl *child);
 _UI_EXTERN int uiWindowMargined(uiWindow *w);
 _UI_EXTERN void uiWindowSetMargined(uiWindow *w, int margined);
 _UI_EXTERN void uiWindowSetDropTarget(uiWindow* w, int drop);
-_UI_EXTERN uiWindow *uiNewWindow(const char *title, int width, int height, int hasMenubar);
+_UI_EXTERN uiWindow *uiNewWindow(const char *title, int width, int height, int hasMenubar, int resizable);
 
 _UI_EXTERN void uiWindowOnContentSizeChanged(uiWindow *w, void (*f)(uiWindow *, void *), void *data);
 _UI_EXTERN void uiWindowOnClosing(uiWindow *w, int (*f)(uiWindow *w, void *data), void *data);
diff --git a/src/libui_sdl/libui/windows/window.cpp b/src/libui_sdl/libui/windows/window.cpp
index e126efc3..44fb306f 100644
--- a/src/libui_sdl/libui/windows/window.cpp
+++ b/src/libui_sdl/libui/windows/window.cpp
@@ -512,7 +512,7 @@ static void setClientSize(uiWindow *w, int width, int height, BOOL hasMenubar, D
 		logLastError(L"error resizing window");
 }
 
-uiWindow *uiNewWindow(const char *title, int width, int height, int hasMenubar)
+uiWindow *uiNewWindow(const char *title, int width, int height, int hasMenubar, int resizable)
 {
 	uiWindow *w;
 	WCHAR *wtitle;
@@ -525,8 +525,11 @@ uiWindow *uiNewWindow(const char *title, int width, int height, int hasMenubar)
 		hasMenubarBOOL = TRUE;
 	w->hasMenubar = hasMenubarBOOL;
 
-#define style WS_OVERLAPPEDWINDOW
-#define exstyle 0
+    int style = WS_OVERLAPPEDWINDOW;
+    int exstyle = 0;
+
+    if (!resizable)
+        style &= ~(WS_THICKFRAME | WS_MAXIMIZEBOX);
 
 	wtitle = toUTF16(title);
 	w->hwnd = CreateWindowExW(exstyle,
diff --git a/src/libui_sdl/main.cpp b/src/libui_sdl/main.cpp
index 3bd57f50..dceef640 100644
--- a/src/libui_sdl/main.cpp
+++ b/src/libui_sdl/main.cpp
@@ -646,7 +646,7 @@ int main(int argc, char** argv)
     if (w < 256) w = 256;
     if (h < 384) h = 384;
 
-    MainWindow = uiNewWindow("melonDS " MELONDS_VERSION, w, h, 1);
+    MainWindow = uiNewWindow("melonDS " MELONDS_VERSION, w, h, 1, 1);
     uiWindowOnClosing(MainWindow, OnCloseWindow, NULL);
 
     uiWindowSetDropTarget(MainWindow, 1);