diff --git a/src/script/interpreter.cpp b/src/script/interpreter.cpp
--- a/src/script/interpreter.cpp
+++ b/src/script/interpreter.cpp
@@ -930,6 +930,12 @@
                                     // Disabled opcode.
                                     return set_error(serror, SCRIPT_ERR_DISABLED_OPCODE);
                                 }
+                                // 2nd operand must not be 0
+                                if (bn2 == 0) {
+                                    return set_error(serror,
+                                                     SCRIPT_ERR_DIV_BY_ZERO);
+                                }
+                                bn = bn1 / bn2;
                                 break;
 
                             case OP_MOD:
diff --git a/src/script/script.h b/src/script/script.h
--- a/src/script/script.h
+++ b/src/script/script.h
@@ -275,6 +275,12 @@
     inline CScriptNum operator-(const CScriptNum &rhs) const {
         return operator-(rhs.m_value);
     }
+    inline CScriptNum operator/(const int64_t &rhs) const {
+        return CScriptNum(m_value / rhs);
+    }
+    inline CScriptNum operator/(const CScriptNum &rhs) const {
+        return operator/(rhs.m_value);
+    }
 
     inline CScriptNum &operator+=(const CScriptNum &rhs) {
         return operator+=(rhs.m_value);