diff --git a/src/driver/framebuffer.cpp b/src/driver/framebuffer.cpp
index e5230a0e3..15c99a2e9 100644
--- a/src/driver/framebuffer.cpp
+++ b/src/driver/framebuffer.cpp
@@ -430,15 +430,25 @@ unsigned int CFrameBuffer::getScreenHeight(bool real)
 		return g_settings.screen_EndY - g_settings.screen_StartY;
 }
 
-unsigned int CFrameBuffer::getScreenWidthRel()
+unsigned int CFrameBuffer::getScreenPercentRel(bool force_small)
 {
-	// always reduce a possible detailline
-	return (g_settings.screen_EndX - g_settings.screen_StartX - 2*ConnectLineBox_Width) * (g_settings.big_windows ? 100 : NON_BIG_WINDOWS) / 100;
+	int percent = 100;
+	if (force_small || !g_settings.big_windows)
+		percent = NON_BIG_WINDOWS;
+	return percent;
 }
 
-unsigned int CFrameBuffer::getScreenHeightRel()
+unsigned int CFrameBuffer::getScreenWidthRel(bool force_small)
 {
-	return (g_settings.screen_EndY - g_settings.screen_StartY) * (g_settings.big_windows ? 100 : NON_BIG_WINDOWS) / 100;
+	int percent = getScreenPercentRel(force_small);
+	// always reduce a possible detailline
+	return (g_settings.screen_EndX - g_settings.screen_StartX - 2*ConnectLineBox_Width) * percent / 100;
+}
+
+unsigned int CFrameBuffer::getScreenHeightRel(bool force_small)
+{
+	int percent = getScreenPercentRel(force_small);
+	return (g_settings.screen_EndY - g_settings.screen_StartY) * percent / 100;
 }
 
 unsigned int CFrameBuffer::getScreenX()
diff --git a/src/driver/framebuffer.h b/src/driver/framebuffer.h
index c994d3a68..dbe42cf52 100644
--- a/src/driver/framebuffer.h
+++ b/src/driver/framebuffer.h
@@ -146,8 +146,9 @@ class CFrameBuffer
 		unsigned int getStride() const;             // size of a single line in the framebuffer (in bytes)
 		unsigned int getScreenWidth(bool real = false);
 		unsigned int getScreenHeight(bool real = false); 
-		unsigned int getScreenWidthRel();
-		unsigned int getScreenHeightRel();
+		unsigned int getScreenPercentRel(bool force_small);
+		unsigned int getScreenWidthRel(bool force_small = false);
+		unsigned int getScreenHeightRel(bool force_small = false);
 		unsigned int getScreenX();
 		unsigned int getScreenY();