diff --git a/src/checks.h b/src/checks.h
index a5d24c5522..44db46af2f 100644
--- a/src/checks.h
+++ b/src/checks.h
@@ -80,6 +80,7 @@ static inline void CheckEqualsHelper(const char* file, int line,
   }
 }
 
+#if !V8_HOST_ARCH_64_BIT
 // Helper function used by the CHECK_EQ function when given int64_t
 // arguments.  Should not be called directly.
 static inline void CheckEqualsHelper(const char* file, int line,
@@ -98,6 +99,7 @@ static inline void CheckEqualsHelper(const char* file, int line,
              uint32_t(value >> 32), uint32_t(value));
   }
 }
+#endif
 
 
 // Helper function used by the CHECK_NE function when given int
diff --git a/test/cctest/test-api.cc b/test/cctest/test-api.cc
index 5b0a2d421c..73d0f1ab06 100644
--- a/test/cctest/test-api.cc
+++ b/test/cctest/test-api.cc
@@ -702,12 +702,18 @@ THREADED_TEST(PropertyHandler) {
 }
 
 
+#if V8_HOST_ARCH_64_BIT
+# define CAST_TO_INT64(x) (int(x))
+#else
+# define CAST_TO_INT64(x) (int64_t(x))
+#endif
+
 THREADED_TEST(TinyInteger) {
   v8::HandleScope scope;
   LocalContext env;
   int32_t value = 239;
   Local<v8::Integer> value_obj = v8::Integer::New(value);
-  CHECK_EQ(int64_t(value), value_obj->Value());
+  CHECK_EQ(CAST_TO_INT64(value), value_obj->Value());
 }
 
 
@@ -718,7 +724,7 @@ THREADED_TEST(BigSmiInteger) {
   CHECK(i::Smi::IsValid(value));
   CHECK(!i::Smi::IsValid(value + 1));
   Local<v8::Integer> value_obj = v8::Integer::New(value);
-  CHECK_EQ(int64_t(value), value_obj->Value());
+  CHECK_EQ(CAST_TO_INT64(value), value_obj->Value());
 }
 
 
@@ -728,7 +734,7 @@ THREADED_TEST(BigInteger) {
   int32_t value = (1 << 30) + 1;
   CHECK(!i::Smi::IsValid(value));
   Local<v8::Integer> value_obj = v8::Integer::New(value);
-  CHECK_EQ(int64_t(value), value_obj->Value());
+  CHECK_EQ(CAST_TO_INT64(value), value_obj->Value());
 }
 
 
@@ -737,7 +743,7 @@ THREADED_TEST(TinyUnsignedInteger) {
   LocalContext env;
   uint32_t value = 239;
   Local<v8::Integer> value_obj = v8::Integer::New(value);
-  CHECK_EQ(int64_t(value), value_obj->Value());
+  CHECK_EQ(CAST_TO_INT64(value), value_obj->Value());
 }
 
 
@@ -748,7 +754,7 @@ THREADED_TEST(BigUnsignedSmiInteger) {
   CHECK(i::Smi::IsValid(value));
   CHECK(!i::Smi::IsValid(value + 1));
   Local<v8::Integer> value_obj = v8::Integer::New(value);
-  CHECK_EQ(int64_t(value), value_obj->Value());
+  CHECK_EQ(CAST_TO_INT64(value), value_obj->Value());
 }
 
 
@@ -758,7 +764,7 @@ THREADED_TEST(BigUnsignedInteger) {
   uint32_t value = (1 << 30) + 1;
   CHECK(!i::Smi::IsValid(value));
   Local<v8::Integer> value_obj = v8::Integer::New(value);
-  CHECK_EQ(int64_t(value), value_obj->Value());
+  CHECK_EQ(CAST_TO_INT64(value), value_obj->Value());
 }
 
 
@@ -767,7 +773,7 @@ THREADED_TEST(OutOfSignedRangeUnsignedInteger) {
   LocalContext env;
   uint32_t value = uint32_t(0xffffffff);
   Local<v8::Integer> value_obj = v8::Integer::New(value);
-  CHECK_EQ(int64_t(value), value_obj->Value());
+  CHECK_EQ(CAST_TO_INT64(value), value_obj->Value());
 }