diff --git a/src/script/interpreter.cpp b/src/script/interpreter.cpp
--- a/src/script/interpreter.cpp
+++ b/src/script/interpreter.cpp
@@ -291,56 +291,13 @@
     return true;
 }
 
-static inline bool IsOpcodeDisabled(opcodetype opcode, uint32_t flags) {
-    bool fEnabledOpCodesMonolith =
-        (flags & SCRIPT_ENABLE_MONOLITH_OPCODES) != 0;
-
-    if (fEnabledOpCodesMonolith) {
-        switch (opcode) {
-            case OP_CAT:
-                return true;
-
-            case OP_SPLIT:
-                return true;
-
-            case OP_BIN2NUM:
-                return true;
-
-            case OP_NUM2BIN:
-                return true;
-
-            case OP_AND:
-                return false;
-
-            case OP_OR:
-                return false;
-
-            case OP_XOR:
-                return false;
-
-            case OP_MUL:
-                return true;
-
-            case OP_DIV:
-                return true;
-
-            case OP_MOD:
-                return true;
-
-            default:
-                break;
-        }
-    }
-
+static bool IsOpcodeDisabled(opcodetype opcode, uint32_t flags) {
     switch (opcode) {
         case OP_CAT:
         case OP_SPLIT:
         case OP_BIN2NUM:
         case OP_NUM2BIN:
         case OP_INVERT:
-        case OP_AND:
-        case OP_OR:
-        case OP_XOR:
         case OP_2MUL:
         case OP_2DIV:
         case OP_MUL:
@@ -348,8 +305,17 @@
         case OP_MOD:
         case OP_LSHIFT:
         case OP_RSHIFT:
+            // Disabled opcodes.
             return true;
 
+        case OP_AND:
+        case OP_OR:
+        case OP_XOR:
+            // Opcodes that have been reenabled.
+            if ((flags & SCRIPT_ENABLE_MONOLITH_OPCODES) == 0) {
+                return true;
+            }
+
         default:
             break;
     }