diff --git a/src/r_patch.c b/src/r_patch.c
index 83593d295..0519d6dc9 100644
--- a/src/r_patch.c
+++ b/src/r_patch.c
@@ -1135,6 +1135,7 @@ INT32 R_GetRollAngle(angle_t rollangle)
 	ra += (ROTANGDIFF/2);
 #endif
 	ra /= ROTANGDIFF;
+	ra %= ROTANGLES;
 	return ra;
 }