diff --git a/src/drawableline.cpp b/src/drawableline.cpp
index 6639a23..fd96569 100644
--- a/src/drawableline.cpp
+++ b/src/drawableline.cpp
@@ -112,24 +112,30 @@ namespace cloonel {
 		LineBase scaledLine(*this);
 		scaledLine += static_cast<short2>(parPos);
 		scaledLine *= parScaling;
+		const short2 wh(static_cast<short2>(m_sdlmain->WidthHeight()));
 		{
 			SDL_Rect screen;
 			screen.x = screen.y = 0;
-			const short2 wh(static_cast<short2>(m_sdlmain->WidthHeight()));
 			screen.w = wh.x();
 			screen.h = wh.y();
 
 			ClipLine(screen, scaledLine);
 		}
-		const int16_t h = static_cast<int16_t>(m_sdlmain->WidthHeight().y());
+
 		if (scaledLine[0] != scaledLine[1]) {
-			SDL_RenderDrawLine(
-				m_sdlmain->GetRenderer(),
-				scaledLine[0].x(),
-				h - scaledLine[0].y(),
-				scaledLine[1].x(),
-				h - scaledLine[1].y()
-			);
+			const bool isOnScreen = scaledLine[0] >= short2(0) and scaledLine[0] < wh and
+				scaledLine[1] >= short2(0) and scaledLine[1] < wh;
+
+			if (isOnScreen) {
+				const int16_t h = static_cast<int16_t>(m_sdlmain->WidthHeight().y());
+				SDL_RenderDrawLine(
+					m_sdlmain->GetRenderer(),
+					scaledLine[0].x(),
+					h - scaledLine[0].y(),
+					scaledLine[1].x(),
+					h - scaledLine[1].y()
+				);
+			}
 		}
 		//Returns 0 on success or a negative error code on failure; call SDL_GetError() for more information.
 		//http://www.ginkgobitter.org/sdl/?SDL_RenderDrawLine