diff --git a/r_surf.c b/r_surf.c
index 954e3b3b..909370b2 100644
--- a/r_surf.c
+++ b/r_surf.c
@@ -1198,6 +1198,9 @@ void R_DrawSurfaceDecals()
 			w = w >> r_drawsurf.surfmip;
 			h = h >> r_drawsurf.surfmip;
 
+			if( w < 1 || h < 1 )
+				continue;
+
 			if( x < 0 )
 			{
 				s1 += (-x)*(s2-s1) / w;