diff --git a/source/Platform/Unix/X11Display.cpp b/source/Platform/Unix/X11Display.cpp
index f2f5289..9b54150 100644
--- a/source/Platform/Unix/X11Display.cpp
+++ b/source/Platform/Unix/X11Display.cpp
@@ -102,8 +102,16 @@ void* X11Display::getHandle() const
 
 void X11Display::setSize(unsigned int width, unsigned int height)
 {
-	m_size = Vector2u(width, height);
+	// X11 does not like if width or height is zero.
+	if (width == 0) {
+		width = 1;
+	}
 
+	if (height == 0) {
+		height = 1;
+	}
+
+	m_size = Vector2u(width, height);
 	::XResizeWindow(m_disp, m_win, m_size.x, m_size.y);
 }