diff --git a/source/blood/src/replace.cpp b/source/blood/src/replace.cpp
index decb98dd2..e9cad9ecf 100644
--- a/source/blood/src/replace.cpp
+++ b/source/blood/src/replace.cpp
@@ -99,7 +99,7 @@ void HookReplaceFunctions(void)
     loadvoxel_replace = qloadvoxel;
     loadboard_replace = qloadboard;
     saveboard_replace = qsaveboard;
-    bloodhack = true;
+    playing_blood = true;
 }
 
 END_BLD_NS
diff --git a/source/build/include/build.h b/source/build/include/build.h
index b7cd2aeac..2eb75c812 100644
--- a/source/build/include/build.h
+++ b/source/build/include/build.h
@@ -172,8 +172,8 @@ void yax_updategrays(int32_t posze);
 #  define YAX_NEXTWALLDEFAULT(Cf) (-1)
 # else
    // More user tag hijacking: lotag/extra. :/
-#  define YAX_PTRNEXTWALL(Ptr, Wall, Cf) (*(int16_t *)(&Ptr[Wall].lotag + (bloodhack ? 1 : 2)*Cf))
-#  define YAX_NEXTWALLDEFAULT(Cf) (bloodhack ? 0 : ((Cf)==YAX_CEILING) ? 0 : -1)
+#  define YAX_PTRNEXTWALL(Ptr, Wall, Cf) (*(int16_t *)(&Ptr[Wall].lotag + (playing_blood ? 1 : 2)*Cf))
+#  define YAX_NEXTWALLDEFAULT(Cf) (playing_blood ? 0 : ((Cf)==YAX_CEILING) ? 0 : -1)
    extern int16_t yax_bunchnum[MAXSECTORS][2];
    extern int16_t yax_nextwall[MAXWALLS][2];
 # endif
@@ -938,7 +938,6 @@ static FORCE_INLINE int32_t videoGetRenderMode(void)
 #endif
 }
 
-extern int32_t bloodhack;
 enum {
     ENGINECOMPATIBILITY_NONE = 0,
     ENGINECOMPATIBILITY_19950829, // Powerslave/Exhumed
diff --git a/source/build/src/engine.cpp b/source/build/src/engine.cpp
index 5464701c1..edb3504f1 100644
--- a/source/build/src/engine.cpp
+++ b/source/build/src/engine.cpp
@@ -190,8 +190,6 @@ static fix16_t global100horiz;  // (-100..300)-scale horiz (the one passed to dr
 
 int32_t(*getpalookup_replace)(int32_t davis, int32_t dashade) = NULL;
 
-int32_t bloodhack = 0;
-
 // adapted from build.c
 static void getclosestpointonwall_internal(vec2_t const p, int32_t const dawall, vec2_t *const closest)
 {
@@ -755,7 +753,7 @@ void yax_tweakpicnums(int32_t bunchnum, int32_t cf, int32_t restore)
                 if (editstatus && showinvisibility)
                     SECTORFLD(i,picnum, cf) = MAXTILES-1;
                 else //if ((dastat&(128+256))==0)
-                    SECTORFLD(i,picnum, cf) = bloodhack ? MAXTILES-2 : 13; //FOF;
+                    SECTORFLD(i,picnum, cf) = playing_blood ? MAXTILES-2 : 13; //FOF;
             }
             else
             {
@@ -5169,7 +5167,7 @@ static void classicDrawSprite(int32_t snum)
                 cstat &= ~512;
 
             // Blood's transparency table is inverted
-            if (bloodhack)
+            if (playing_blood)
                 cstat ^= 512;
         }
 
@@ -7021,7 +7019,7 @@ static void dorotatesprite(int32_t sx, int32_t sy, int32_t z, int16_t a, int16_t
                 dastat &= ~RS_TRANS2;
 
             // Blood's transparency table is inverted
-            if (bloodhack)
+            if (playing_blood)
                 dastat ^= RS_TRANS2;
         }
     }
@@ -7514,7 +7512,7 @@ static void dosetaspect(void)
             radarang2[i] = ((qradarang[k]+j)>>6);
         }
 
-        if (xdimen != oxdimen && (voxoff[0][0] || bloodhack))
+        if (xdimen != oxdimen && (voxoff[0][0] || playing_blood))
         {
             distrecip = NULL;
             for (i = 0; i < DISTRECIPCACHESIZE; i++)
diff --git a/source/build/src/palette.cpp b/source/build/src/palette.cpp
index 922883fd5..17ed88cb2 100644
--- a/source/build/src/palette.cpp
+++ b/source/build/src/palette.cpp
@@ -15,6 +15,7 @@
 #include "palette.h"
 #include "a.h"
 #include "xxhash.h"
+#include "common.h"
 #include "../../glbackend/glbackend.h"
 
 #include "vfs.h"
@@ -387,7 +388,7 @@ void palettePostLoadTables(void)
     for (size_t i = 0; i<16; i++)
     {
         palette_t *edcol = (palette_t *) &vgapal16[4*i];
-        editorcolors[i] = getclosestcol_lim(edcol->b, edcol->g, edcol->r, bloodhack ? 254 : 239);
+        editorcolors[i] = getclosestcol_lim(edcol->b, edcol->g, edcol->r, playing_blood ? 254 : 239);
     }
 
     // Bmemset(PaletteIndexFullbrights, 0, sizeof(PaletteIndexFullbrights));