diff --git a/polymer/eduke32/build/include/editor.h b/polymer/eduke32/build/include/editor.h
index 507d85733..1f427ee72 100644
--- a/polymer/eduke32/build/include/editor.h
+++ b/polymer/eduke32/build/include/editor.h
@@ -316,10 +316,20 @@ void _printmessage16(const char *fmt, ...) ATTRIBUTE((format(printf,1,2)));
 
 extern char lastpm16buf[156];
 
-int32_t fillsector(int16_t sectnum, int32_t fillcolor);  // fillcolor == -1: default (pulsating)
+int32_t fillsector_maybetrans(int16_t sectnum, int32_t fillcolor, uint8_t dotrans);  // fillcolor == -1: default (pulsating)
 int32_t ask_if_sure(const char *query, uint32_t flags);
 int32_t editor_ask_function(const char *question, const char *dachars, int32_t numchars);
 
+static inline int32_t fillsector(int16_t sectnum, int32_t fillcolor)
+{
+    return fillsector_maybetrans(sectnum, fillcolor, 1);
+}
+
+static inline int32_t fillsector_notrans(int16_t sectnum, int32_t fillcolor)
+{
+    return fillsector_maybetrans(sectnum, fillcolor, 0);
+}
+
 void spriteoncfz(int32_t i, int32_t *czptr, int32_t *fzptr) ATTRIBUTE((nonnull(2,3)));
 void DoSpriteOrnament(int32_t i);
 
diff --git a/polymer/eduke32/build/src/build.c b/polymer/eduke32/build/src/build.c
index 290e77573..470de4619 100644
--- a/polymer/eduke32/build/src/build.c
+++ b/polymer/eduke32/build/src/build.c
@@ -2926,7 +2926,7 @@ static int32_t bakframe_fillandfade(char **origframeptr, int32_t sectnum, const
         enddrawing();
     }
 
-    fillsector(sectnum, editorcolors[9]);
+    fillsector_notrans(sectnum, editorcolors[9]);
     fade_editor_screen(editorcolors[9]);
 
     return ask_if_sure(querystr, 0);
@@ -6202,9 +6202,10 @@ end_point_dragging:
                     // now is a good time to ask...
                     for (comp=0; comp<2; comp++)
                         for (k=0; k<collnumsects[comp]; k++)
-                            fillsector(collsectlist[comp][k], comp==0 ? 159 : editorcolors[11]);
+                            fillsector_notrans(collsectlist[comp][k], comp==0 ? 159 : editorcolors[11]);
 
                     fade_editor_screen(editorcolors[11] | (159<<8));
+
                     askres = editor_ask_function("Connect yellow ceil w/ blue floor (1) or (v)ice versa?", askchars, 2);
                     if (askres==-1)
                         goto end_join_sectors;
@@ -6234,7 +6235,7 @@ end_point_dragging:
 
                         for (comp=0; comp<2; comp++)
                             for (k=0; k<collnumsects[comp]; k++)
-                                fillsector(collsectlist[comp][k], comp==0 ? 159 : editorcolors[11]);
+                                fillsector_notrans(collsectlist[comp][k], comp==0 ? 159 : editorcolors[11]);
 
                         fade_editor_screen(editorcolors[11] | (159<<8));
                         askres = editor_ask_function("Move (y)ellow or (b)lue component?", askchars, 2);
@@ -6276,7 +6277,7 @@ end_point_dragging:
                             int32_t movecol = movestat==0 ? 159 : editorcolors[11];
                             for (i=0; i<numsectors; i++)
                                 if (tcollbitmap[i>>3]&(1<<(i&7)))
-                                    fillsector(i, editorcolors[12]);
+                                    fillsector_notrans(i, editorcolors[12]);
 
                             fade_editor_screen(editorcolors[12] | (movecol<<8));
                             moveonwp = ask_if_sure("Also move formerly wall-connected sectors?",0);
@@ -6444,8 +6445,8 @@ end_point_dragging:
                             }
 
                             {
-                                fillsector(i, editorcolors[9]);
-                                fillsector(joinsector[0], editorcolors[9]);
+                                fillsector_notrans(i, editorcolors[9]);
+                                fillsector_notrans(joinsector[0], editorcolors[9]);
                                 fade_editor_screen(editorcolors[9]);
 
                                 if (!ask_if_sure("Really join non-adjacent sectors? (Y/N)", 0))
@@ -9973,7 +9974,7 @@ static inline int32_t imod(int32_t a, int32_t b)
 }
 #endif
 
-int32_t fillsector(int16_t sectnum, int32_t fillcolor)
+int32_t fillsector_maybetrans(int16_t sectnum, int32_t fillcolor, uint8_t dotrans)
 {
     if (sectnum == -1)
         return 0;
@@ -10096,7 +10097,7 @@ int32_t fillsector(int16_t sectnum, int32_t fillcolor)
                 if (fillist[z+1] > rborder)
                     fillist[z+1] = rborder;
 
-                drawline16(fillist[z]+1,sy, fillist[z+1]-1,sy, -col);  //editorcolors[fillcolor]
+                drawline16(fillist[z]+1,sy, fillist[z+1]-1,sy, dotrans ? -col : col);  //editorcolors[fillcolor]
             }
         }
     }
diff --git a/polymer/eduke32/source/astub.c b/polymer/eduke32/source/astub.c
index 846313620..256b76b30 100644
--- a/polymer/eduke32/source/astub.c
+++ b/polymer/eduke32/source/astub.c
@@ -7164,7 +7164,7 @@ static void Keys2d(void)
         if (fb >= 0)
         {
             for (SECTORS_OF_BUNCH(fb,YAX_FLOOR, i))
-                fillsector(i, editorcolors[11]);
+                fillsector_notrans(i, editorcolors[11]);
             fade_editor_screen(editorcolors[11]);
 
             if (ask_if_sure("Clear all TROR extensions from marked sectors?", 0))