diff --git a/config.cpp b/config.cpp
index b05209c7..43bf5f69 100644
--- a/config.cpp
+++ b/config.cpp
@@ -1696,10 +1696,12 @@ EX void show3D() {
       });
     }
   
+  #if CAP_RAY
   if(GDIM == 3) {
     dialog::addItem(XLAT("configure raycasting"), 'A');
     dialog::add_action_push(ray::configure);
     }
+  #endif
   
   edit_levellines('L');
   
diff --git a/raycaster.cpp b/raycaster.cpp
index 88404c7d..5af5f95f 100644
--- a/raycaster.cpp
+++ b/raycaster.cpp
@@ -11,7 +11,7 @@ namespace hr {
 
 EX namespace ray {
 
-#if MAXMDIM >= 4
+#if CAP_RAY
 
 /** texture IDs */
 GLuint txConnections = 0, txWallcolor = 0, txTextureMap = 0;
@@ -1234,7 +1234,7 @@ auto hookc = addHook(hooks_configfile, 100, addconfig);
 
 #endif
 
-#if MAXMDIM == 3
+#if !CAP_RAY
 EX always_false in_use;
 EX always_false comparison_mode;
 EX void reset_raycaster() { }
diff --git a/sysconfig.h b/sysconfig.h
index 5657fe21..ae2c51cc 100644
--- a/sysconfig.h
+++ b/sysconfig.h
@@ -538,6 +538,10 @@ union SDL_Event;
 #define CAP_FIELD (!(ISMINI))
 #endif
 
+#ifndef CAP_RAY
+#define CAP_RAY (MAXMDIM >= 4 && !ISWEB && !ISMOBILE)
+#endif
+
 #ifndef CAP_MEMORY_RESERVE
 #define CAP_MEMORY_RESERVE (!ISMOBILE && !ISWEB)
 #endif