diff --git a/sherpa-onnx/csrc/offline-punctuation-ct-transformer-impl.h b/sherpa-onnx/csrc/offline-punctuation-ct-transformer-impl.h
index 9699563c..48933dd8 100644
--- a/sherpa-onnx/csrc/offline-punctuation-ct-transformer-impl.h
+++ b/sherpa-onnx/csrc/offline-punctuation-ct-transformer-impl.h
@@ -8,6 +8,7 @@
 #include <string>
 #include <utility>
 #include <vector>
+#include <math.h>
 
 #if __ANDROID_API__ >= 9
 #include "android/asset_manager.h"
@@ -60,7 +61,7 @@ class OfflinePunctuationCtTransformerImpl : public OfflinePunctuationImpl {
 
     int32_t segment_size = 20;
     int32_t max_len = 200;
-    int32_t num_segments = (token_ids.size() + segment_size - 1) / segment_size;
+    int32_t num_segments = ceil(((float)token_ids.size() + segment_size - 1) / segment_size);
 
     std::vector<int32_t> punctuations;
     int32_t last = -1;