diff --git a/nonisotropic.cpp b/nonisotropic.cpp
index 25f3a452..0d770da9 100644
--- a/nonisotropic.cpp
+++ b/nonisotropic.cpp
@@ -2083,7 +2083,7 @@ EX namespace rots {
     return spin(beta) * uxpush(distance/2) * spin(-beta+alpha);
     }
   
-  std::map<int, transmatrix> saved_matrices_ray;
+  EX std::map<int, transmatrix> saved_matrices_ray;
 
   EX transmatrix ray_iadj(cell *c1, int i) {
     if(i == c1->type-1) return uzpush(-cgi.plevel) * spin(-2*cgi.plevel);
diff --git a/raycaster.cpp b/raycaster.cpp
index c43f9565..c564f5ef 100644
--- a/raycaster.cpp
+++ b/raycaster.cpp
@@ -1675,7 +1675,10 @@ struct raycast_map {
 
 unique_ptr<raycast_map> rmap;
 
-EX void reset_raycaster() { our_raycaster = nullptr; rmap = nullptr; }
+EX void reset_raycaster() { 
+  our_raycaster = nullptr; rmap = nullptr; 
+  rots::saved_matrices_ray = {};
+  }
 
 EX void cast() {
   // may call itself recursively in case of bugs -- just in case...