diff --git a/src/game/collision.cpp b/src/game/collision.cpp
index 40d79d00a..320b55d08 100644
--- a/src/game/collision.cpp
+++ b/src/game/collision.cpp
@@ -249,6 +249,7 @@ void ThroughOffset(vec2 Pos0, vec2 Pos1, int *Ox, int *Oy)
 int CCollision::IntersectLine(vec2 Pos0, vec2 Pos1, vec2 *pOutCollision, vec2 *pOutBeforeCollision, bool AllowThrough)
 {
 	float d = distance(Pos0, Pos1);
+	int End(d+1);
 	vec2 Last = Pos0;
 	int ix, iy; // Temporary position for checking collision
 	int dx, dy; // Offset for checking the "through" tile
@@ -256,9 +257,9 @@ int CCollision::IntersectLine(vec2 Pos0, vec2 Pos1, vec2 *pOutCollision, vec2 *p
 		{
 		ThroughOffset(Pos0, Pos1, &dx, &dy);
 		}
-	for(float f = 0; f < d; f++)
+	for(int i = 0; i < End; i++)
 	{
-		float a = f/d;
+		float a = i/d;
 		vec2 Pos = mix(Pos0, Pos1, a);
 		ix = round(Pos.x);
 		iy = round(Pos.y);