diff --git a/src/wasm/wasm-interpreter.cc b/src/wasm/wasm-interpreter.cc
index f53392043f..b0c493feb8 100644
--- a/src/wasm/wasm-interpreter.cc
+++ b/src/wasm/wasm-interpreter.cc
@@ -2300,6 +2300,18 @@ class ThreadImpl {
           Push(WasmValue(ExecuteI64ReinterpretF64(val)));
           break;
         }
+#define SIGN_EXTENSION_CASE(name, wtype, ntype)        \
+  case kExpr##name: {                                  \
+    ntype val = static_cast<ntype>(Pop().to<wtype>()); \
+    Push(WasmValue(static_cast<wtype>(val)));          \
+    break;                                             \
+  }
+          SIGN_EXTENSION_CASE(I32SExtendI8, int32_t, int8_t);
+          SIGN_EXTENSION_CASE(I32SExtendI16, int32_t, int16_t);
+          SIGN_EXTENSION_CASE(I64SExtendI8, int64_t, int8_t);
+          SIGN_EXTENSION_CASE(I64SExtendI16, int64_t, int16_t);
+          SIGN_EXTENSION_CASE(I64SExtendI32, int64_t, int32_t);
+#undef SIGN_EXTENSION_CASE
         case kNumericPrefix: {
           ++len;
           if (!ExecuteNumericOp(opcode, &decoder, code, pc, len)) return;
diff --git a/test/cctest/wasm/test-run-wasm-sign-extension.cc b/test/cctest/wasm/test-run-wasm-sign-extension.cc
index e2d0afc6af..17a79bc27f 100644
--- a/test/cctest/wasm/test-run-wasm-sign-extension.cc
+++ b/test/cctest/wasm/test-run-wasm-sign-extension.cc
@@ -11,7 +11,7 @@ namespace internal {
 namespace wasm {
 
 // TODO(gdeepti): Enable tests to run in the interpreter.
-WASM_COMPILED_EXEC_TEST(I32SExtendI8) {
+WASM_EXEC_TEST(I32SExtendI8) {
   EXPERIMENTAL_FLAG_SCOPE(se);
   WasmRunner<int32_t, int32_t> r(execution_mode);
   BUILD(r, WASM_I32_SIGN_EXT_I8(WASM_GET_LOCAL(0)));
@@ -22,7 +22,7 @@ WASM_COMPILED_EXEC_TEST(I32SExtendI8) {
   CHECK_EQ(-0x80, r.Call(0x80));
 }
 
-WASM_COMPILED_EXEC_TEST(I32SExtendI16) {
+WASM_EXEC_TEST(I32SExtendI16) {
   EXPERIMENTAL_FLAG_SCOPE(se);
   WasmRunner<int32_t, int32_t> r(execution_mode);
   BUILD(r, WASM_I32_SIGN_EXT_I16(WASM_GET_LOCAL(0)));
@@ -33,7 +33,7 @@ WASM_COMPILED_EXEC_TEST(I32SExtendI16) {
   CHECK_EQ(-0x8000, r.Call(0x8000));
 }
 
-WASM_COMPILED_EXEC_TEST(I64SExtendI8) {
+WASM_EXEC_TEST(I64SExtendI8) {
   EXPERIMENTAL_FLAG_SCOPE(se);
   WasmRunner<int64_t, int64_t> r(execution_mode);
   BUILD(r, WASM_I64_SIGN_EXT_I8(WASM_GET_LOCAL(0)));
@@ -44,7 +44,7 @@ WASM_COMPILED_EXEC_TEST(I64SExtendI8) {
   CHECK_EQ(-0x80, r.Call(0x80));
 }
 
-WASM_COMPILED_EXEC_TEST(I64SExtendI16) {
+WASM_EXEC_TEST(I64SExtendI16) {
   EXPERIMENTAL_FLAG_SCOPE(se);
   WasmRunner<int64_t, int64_t> r(execution_mode);
   BUILD(r, WASM_I64_SIGN_EXT_I16(WASM_GET_LOCAL(0)));
@@ -55,7 +55,7 @@ WASM_COMPILED_EXEC_TEST(I64SExtendI16) {
   CHECK_EQ(-0x8000, r.Call(0x8000));
 }
 
-WASM_COMPILED_EXEC_TEST(I64SExtendI32) {
+WASM_EXEC_TEST(I64SExtendI32) {
   EXPERIMENTAL_FLAG_SCOPE(se);
   WasmRunner<int64_t, int64_t> r(execution_mode);
   BUILD(r, WASM_I64_SIGN_EXT_I32(WASM_GET_LOCAL(0)));