diff --git a/CHANGELOG.md b/CHANGELOG.md
index 539f624..12f10bb 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -18,6 +18,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - added nn.BatchNorm.Forward() with default training=true
 - added exposing `tensor.Ctensor()`
 - added API `tensor.FromCtensor()`
+- [#67]: fixed incorrect type casting at `atc_cuda_count`
 
 ## [Nofix]
 - ctype `long` caused compiling error in MacOS as noted on [#44]. Not working on linux box.
diff --git a/libtch/tensor.go b/libtch/tensor.go
index 9ec1dfd..b2f9d92 100644
--- a/libtch/tensor.go
+++ b/libtch/tensor.go
@@ -111,9 +111,9 @@ func GetAndResetLastErr() *C.char {
 }
 
 // int atc_cuda_device_count();
-func AtcCudaDeviceCount() int {
+func AtcCudaDeviceCount() int32 {
 	result := C.atc_cuda_device_count()
-	return *(*int)(unsafe.Pointer(&result))
+	return *(*int32)(unsafe.Pointer(&result))
 }
 
 // int atc_cuda_is_available();