diff --git a/src/frontend/graphics/Skybox.cpp b/src/frontend/graphics/Skybox.cpp
index dcee7137..08e2fff0 100644
--- a/src/frontend/graphics/Skybox.cpp
+++ b/src/frontend/graphics/Skybox.cpp
@@ -86,7 +86,7 @@ void Skybox::refresh(float t, float mie, uint quality) {
     
     shader->uniform1i("u_quality", quality);
     shader->uniform1f("u_mie", mie);
-    shader->uniform3f("u_lightDir", glm::normalize(vec3(sin(t), -cos(t), 0.7f)));
+    shader->uniform3f("u_lightDir", glm::normalize(vec3(sin(t), -cos(t), -0.7f)));
     for (uint face = 0; face < 6; face++) {
         glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_CUBE_MAP_POSITIVE_X + face, cubemap, 0);
         glClear(GL_COLOR_BUFFER_BIT);
diff --git a/src/window/Window.cpp b/src/window/Window.cpp
index eccdb44b..ad221942 100644
--- a/src/window/Window.cpp
+++ b/src/window/Window.cpp
@@ -178,7 +178,9 @@ void Window::pushScissor(vec4 area) {
 	if (area.z < 0.0f || area.w < 0.0f) {
 		glScissor(0, 0, 0, 0);
 	} else {
-		glScissor(area.x, Window::height-area.w, area.z-area.x, area.w-area.y);
+		glScissor(area.x, Window::height-area.w, 
+				  std::max(0, int(area.z-area.x)), 
+				  std::max(0, int(area.w-area.y)));
 	}
 	scissorArea = area;
 }
@@ -193,7 +195,9 @@ void Window::popScissor() {
 	if (area.z < 0.0f || area.w < 0.0f) {
 		glScissor(0, 0, 0, 0);
 	} else {
-		glScissor(area.x, Window::height-area.w, area.z-area.x, area.w-area.y);
+		glScissor(area.x, Window::height-area.w, 
+				  std::max(0, int(area.z-area.x)), 
+				  std::max(0, int(area.w-area.y)));
 	}
 	if (scissorStack.empty()) {
 		glDisable(GL_SCISSOR_TEST);