diff --git a/sherpa-onnx/csrc/ascend/offline-paraformer-model-ascend.cc b/sherpa-onnx/csrc/ascend/offline-paraformer-model-ascend.cc
index 8acd020d72..413b05382b 100644
--- a/sherpa-onnx/csrc/ascend/offline-paraformer-model-ascend.cc
+++ b/sherpa-onnx/csrc/ascend/offline-paraformer-model-ascend.cc
@@ -86,6 +86,9 @@ class OfflineParaformerModelAscend::Impl {
     // TODO(fangjun): Support multi clients
     std::lock_guard<std::mutex> lock(mutex_);
 
+    aclError ret_set_ctx = aclrtSetCurrentContext(*context_);
+    SHERPA_ONNX_ASCEND_CHECK(ret_set_ctx, "Failed to call aclrtSetCurrentContext");
+
     features = ApplyLFR(std::move(features));
     if (features.empty()) {
       return {};
diff --git a/sherpa-onnx/csrc/ascend/offline-sense-voice-model-ascend.cc b/sherpa-onnx/csrc/ascend/offline-sense-voice-model-ascend.cc
index 7143d1ce29..ab356b9c0c 100644
--- a/sherpa-onnx/csrc/ascend/offline-sense-voice-model-ascend.cc
+++ b/sherpa-onnx/csrc/ascend/offline-sense-voice-model-ascend.cc
@@ -56,6 +56,9 @@ class OfflineSenseVoiceModelAscend::Impl {
     // TODO(fangjun): Support multi clients
     std::lock_guard<std::mutex> lock(mutex_);
 
+    aclError ret_set_ctx = aclrtSetCurrentContext(*context_);
+    SHERPA_ONNX_ASCEND_CHECK(ret_set_ctx, "Failed to call aclrtSetCurrentContext");
+
     features = ApplyLFR(std::move(features));
     if (features.empty()) {
       return {};
diff --git a/sherpa-onnx/csrc/ascend/offline-whisper-model-ascend.cc b/sherpa-onnx/csrc/ascend/offline-whisper-model-ascend.cc
index 38e4ab9848..be69ae1da4 100644
--- a/sherpa-onnx/csrc/ascend/offline-whisper-model-ascend.cc
+++ b/sherpa-onnx/csrc/ascend/offline-whisper-model-ascend.cc
@@ -88,6 +88,9 @@ class OfflineWhisperModelAscend::Impl {
     // TODO(fangjun): Support multi clients
     std::lock_guard<std::mutex> lock(mutex_);
 
+    aclError ret_set_ctx = aclrtSetCurrentContext(*context_);
+    SHERPA_ONNX_ASCEND_CHECK(ret_set_ctx, "Failed to call aclrtSetCurrentContext");
+
     OfflineWhisperDecoderResult r;
 
     if (features.empty()) {
diff --git a/sherpa-onnx/csrc/ascend/offline-zipformer-ctc-model-ascend.cc b/sherpa-onnx/csrc/ascend/offline-zipformer-ctc-model-ascend.cc
index 626b634a14..cd6d34d90f 100644
--- a/sherpa-onnx/csrc/ascend/offline-zipformer-ctc-model-ascend.cc
+++ b/sherpa-onnx/csrc/ascend/offline-zipformer-ctc-model-ascend.cc
@@ -51,6 +51,9 @@ class OfflineZipformerCtcModelAscend::Impl {
     // TODO(fangjun): Support multi clients
     std::lock_guard<std::mutex> lock(mutex_);
 
+    aclError ret_set_ctx = aclrtSetCurrentContext(*context_);
+    SHERPA_ONNX_ASCEND_CHECK(ret_set_ctx, "Failed to call aclrtSetCurrentContext");
+
     int32_t num_frames = features.size() / feat_dim_;
 
     if (num_frames != max_num_frames_) {