diff --git a/src/interpreter/interpreter.cpp b/src/interpreter/interpreter.cpp
index 07f69509b3f..42a83f73786 100644
--- a/src/interpreter/interpreter.cpp
+++ b/src/interpreter/interpreter.cpp
@@ -97,9 +97,6 @@ struct ExpressionInterpreter : OverriddenVisitor<ExpressionInterpreter, Flow> {
     } else if (curr->op == SubInt32) {
       push(lhs.sub(rhs));
       return {};
-    } else if (curr->op == MulInt32) {
-      push(lhs.mul(rhs));
-      return {};
     }
     WASM_UNREACHABLE("TODO");
   }
diff --git a/test/gtest/interpreter.cpp b/test/gtest/interpreter.cpp
index 418d61530a7..399d46912e9 100644
--- a/test/gtest/interpreter.cpp
+++ b/test/gtest/interpreter.cpp
@@ -58,20 +58,3 @@ TEST(InterpreterTest, SubI32) {
 
   EXPECT_EQ(results, expected);
 }
-
-TEST(InterpreterTest, MulI32) {
-  Module wasm;
-  IRBuilder builder(wasm);
-
-  ASSERT_FALSE(builder.makeConst(Literal(uint32_t(1))).getErr());
-  ASSERT_FALSE(builder.makeConst(Literal(uint32_t(2))).getErr());
-  ASSERT_FALSE(builder.makeBinary(MulInt32).getErr());
-
-  auto expr = builder.build();
-  ASSERT_FALSE(expr.getErr());
-
-  auto results = Interpreter{}.run(*expr);
-  std::vector<Literal> expected{Literal(uint32_t(2))};
-
-  EXPECT_EQ(results, expected);
-}