diff --git a/polymer/eduke32/build/src/build.c b/polymer/eduke32/build/src/build.c
index 73bfbdf08..219371b7a 100644
--- a/polymer/eduke32/build/src/build.c
+++ b/polymer/eduke32/build/src/build.c
@@ -4456,7 +4456,7 @@ end_yax: ;
                     // didmakered: 'bad'!
                     int32_t didmakered = (highlightsectorcnt<0), hadouterpoint=0;
 #ifdef YAX_ENABLE
-                    for (i=0; i<MAXSECTORS; i++)
+                    for (i=0; i<MAXSECTORS>>3; i++)
                         hlorgraysectbitmap[i] = hlsectorbitmap[i]|graysectbitmap[i];
 #endif
                     for (i=0; i<highlightsectorcnt; i++)