diff --git a/src/r_main.c b/src/r_main.c
index 548f37f57..e43e3a1c3 100644
--- a/src/r_main.c
+++ b/src/r_main.c
@@ -1045,7 +1045,7 @@ subsector_t *R_IsPointInSubsector(fixed_t x, fixed_t y)
 static mobj_t *viewmobj;
 
 // WARNING: a should be unsigned but to add with 2048, it isn't!
-#define AIMINGTODY(a) FixedDiv((FINETANGENT((2048+(((INT32)a)>>ANGLETOFINESHIFT)) & FINEMASK)*160)>>FRACBITS, fovtan)
+#define AIMINGTODY(a) ((FINETANGENT((2048+(((INT32)a)>>ANGLETOFINESHIFT)) & FINEMASK)*160)/fovtan)
 
 // recalc necessary stuff for mouseaiming
 // slopes are already calculated for the full possible view (which is 4*viewheight).