diff --git a/sw/cpp/src/python_interface.cpp b/sw/cpp/src/python_interface.cpp
index df20027..f374bcf 100644
--- a/sw/cpp/src/python_interface.cpp
+++ b/sw/cpp/src/python_interface.cpp
@@ -32,7 +32,7 @@ PYBIND11_MODULE(cpp_decoders, proximal) {
 
     DEF_PROXIMAL_DECODER("ProximalDecoder_7_3", 3, 7)
     DEF_PROXIMAL_DECODER("ProximalDecoder_31_20", 20, 31)
-    DEF_PROXIMAL_DECODER("ProximalDecoder_31_6", 6, 31)
+    DEF_PROXIMAL_DECODER("ProximalDecoder_31_5", 5, 31)
     DEF_PROXIMAL_DECODER("ProximalDecoder_96_48", 48, 96)
     DEF_PROXIMAL_DECODER("ProximalDecoder_204_102", 102, 204)
     DEF_PROXIMAL_DECODER("ProximalDecoder_408_204", 204, 408)