diff --git a/polymer/eduke32/build/src/voxmodel.c b/polymer/eduke32/build/src/voxmodel.c
index ee779f19a..59648e194 100644
--- a/polymer/eduke32/build/src/voxmodel.c
+++ b/polymer/eduke32/build/src/voxmodel.c
@@ -114,19 +114,21 @@ static void putvox(int32_t x, int32_t y, int32_t z, int32_t col)
 #if 0
 static void setzrange0(int32_t *lptr, int32_t z0, int32_t z1)
 {
-    if (!((z0^z1)&~31)) { lptr[z0>>5] &= ((~(-1<<SHIFTMOD32(z0)))|(-1<<SHIFTMOD32(z1))); return; }
+    if (!((z0^z1)&~31)) { lptr[z0>>5] &= ((~-(1<<SHIFTMOD32(z0)))|-(1<<SHIFTMOD32(z1))); return; }
     int32_t z = (z0>>5), ze = (z1>>5);
-    lptr[z] &=~(-1<<SHIFTMOD32(z0)); for (z++; z<ze; z++) lptr[z] = 0;
-    lptr[z] &= (-1<<SHIFTMOD32(z1));
+    lptr[z] &=~-(1<<SHIFTMOD32(z0));
+    for (z++; z<ze; z++) lptr[z] = 0;
+    lptr[z] &= -(1<<SHIFTMOD32(z1));
 }
 #endif
 //Set all bits in vbit from (x,y,z0) to (x,y,z1-1) to 1's
 static void setzrange1(int32_t *lptr, int32_t z0, int32_t z1)
 {
-    if (!((z0^z1)&~31)) { lptr[z0>>5] |= ((~(-1<<SHIFTMOD32(z1)))&(-1<<SHIFTMOD32(z0))); return; }
+    if (!((z0^z1)&~31)) { lptr[z0>>5] |= ((~-(1<<SHIFTMOD32(z1)))&-(1<<SHIFTMOD32(z0))); return; }
     int32_t z = (z0>>5), ze = (z1>>5);
-    lptr[z] |= (-1<<SHIFTMOD32(z0)); for (z++; z<ze; z++) lptr[z] = -1;
-    lptr[z] |=~(-1<<SHIFTMOD32(z1));
+    lptr[z] |= -(1<<SHIFTMOD32(z0));
+    for (z++; z<ze; z++) lptr[z] = -1;
+    lptr[z] |=~-(1<<SHIFTMOD32(z1));
 }
 
 static int32_t isrectfree(int32_t x0, int32_t y0, int32_t dx, int32_t dy)