diff --git a/src/newgrf.cpp b/src/newgrf.cpp
index e13e4b94a1..dddd5fdf06 100644
--- a/src/newgrf.cpp
+++ b/src/newgrf.cpp
@@ -6704,7 +6704,7 @@ static void OptimiseVarAction2Adjust(VarAction2OptimiseState &state, const GrfSp
 			}
 			if (adjust.operation == DSGA_OP_MUL && adjust.variable != 0x7E) {
 				state.inference |= VA2AIF_MUL_BOOL;
-				adjust.adjust_flags |= DSGAF_BOOL_MUL_HINT;
+				adjust.adjust_flags |= DSGAF_JUMP_INS_HINT;
 			}
 		}
 	} else {
@@ -7004,7 +7004,9 @@ static void OptimiseVarAction2Adjust(VarAction2OptimiseState &state, const GrfSp
 					}
 					if ((prev_inference & VA2AIF_ONE_OR_ZERO) || (non_const_var_inference & VA2AIF_ONE_OR_ZERO)) {
 						state.inference |= VA2AIF_MUL_BOOL;
-						adjust.adjust_flags |= DSGAF_BOOL_MUL_HINT;
+					}
+					if (non_const_var_inference & VA2AIF_ONE_OR_ZERO) {
+						adjust.adjust_flags |= DSGAF_JUMP_INS_HINT;
 					}
 					break;
 				}
@@ -7476,7 +7478,7 @@ static void OptimiseVarAction2DeterministicSpriteGroupAdjustOrdering(Determinist
 				});
 
 				adjust.operation = DSGA_OP_RST;
-				adjust.adjust_flags &= ~(DSGAF_SKIP_ON_ZERO | DSGAF_BOOL_MUL_HINT);
+				adjust.adjust_flags &= ~(DSGAF_SKIP_ON_ZERO | DSGAF_JUMP_INS_HINT);
 			}
 		}
 	}
@@ -7585,7 +7587,7 @@ static void OptimiseVarAction2DeterministicSpriteGroupInsertJumps(DeterministicS
 	for (int i = (int)group->adjusts.size() - 1; i >= 1; i--) {
 		DeterministicSpriteGroupAdjust &adjust = group->adjusts[i];
 
-		if (adjust.adjust_flags & DSGAF_BOOL_MUL_HINT) {
+		if (adjust.adjust_flags & DSGAF_JUMP_INS_HINT) {
 			std::bitset<256> ok_stores;
 			int j = i - 1;
 			while (j >= 0) {
@@ -7612,7 +7614,7 @@ static void OptimiseVarAction2DeterministicSpriteGroupInsertJumps(DeterministicS
 			if (j < i - 1) {
 				DeterministicSpriteGroupAdjust current = adjust;
 				current.operation = DSGA_OP_JZ;
-				current.adjust_flags &= ~(DSGAF_BOOL_MUL_HINT | DSGAF_SKIP_ON_ZERO);
+				current.adjust_flags &= ~(DSGAF_JUMP_INS_HINT | DSGAF_SKIP_ON_ZERO);
 				group->adjusts[i - 1].adjust_flags |= DSGAF_END_BLOCK;
 				group->adjusts.erase(group->adjusts.begin() + i);
 				if (j >= 0 && current.variable == 0x7D && (current.adjust_flags & DSGAF_LAST_VAR_READ)) {
diff --git a/src/newgrf_spritegroup.cpp b/src/newgrf_spritegroup.cpp
index 957125ec47..345c02bfe4 100644
--- a/src/newgrf_spritegroup.cpp
+++ b/src/newgrf_spritegroup.cpp
@@ -761,8 +761,8 @@ static char *DumpSpriteGroupAdjust(char *p, const char *last, const Deterministi
 		if (adjust.adjust_flags & DSGAF_LAST_VAR_READ && HasBit(_misc_debug_flags, MDF_NEWGRF_SG_DUMP_MORE_DETAIL)) {
 			p += seprintf(p, last, ", last var read");
 		}
-		if (adjust.adjust_flags & DSGAF_BOOL_MUL_HINT && HasBit(_misc_debug_flags, MDF_NEWGRF_SG_DUMP_MORE_DETAIL)) {
-			p += seprintf(p, last, ", bool mul hint");
+		if (adjust.adjust_flags & DSGAF_JUMP_INS_HINT && HasBit(_misc_debug_flags, MDF_NEWGRF_SG_DUMP_MORE_DETAIL)) {
+			p += seprintf(p, last, ", jump ins hint");
 		}
 		if (adjust.adjust_flags & DSGAF_END_BLOCK) {
 			p += seprintf(p, last, ", end block");
diff --git a/src/newgrf_spritegroup.h b/src/newgrf_spritegroup.h
index 2a683efeb0..ef70da17af 100644
--- a/src/newgrf_spritegroup.h
+++ b/src/newgrf_spritegroup.h
@@ -219,7 +219,7 @@ enum DeterministicSpriteGroupAdjustFlags : uint8 {
 	DSGAF_SKIP_ON_ZERO       = 1 << 0,
 	DSGAF_SKIP_ON_LSB_SET    = 1 << 1,
 	DSGAF_LAST_VAR_READ      = 1 << 2,
-	DSGAF_BOOL_MUL_HINT      = 1 << 3,
+	DSGAF_JUMP_INS_HINT      = 1 << 3,
 	DSGAF_END_BLOCK          = 1 << 4,
 };
 DECLARE_ENUM_AS_BIT_SET(DeterministicSpriteGroupAdjustFlags);