diff --git a/qiskit/qpy/__init__.py b/qiskit/qpy/__init__.py
index 9f790b9f308..01783f138d9 100644
--- a/qiskit/qpy/__init__.py
+++ b/qiskit/qpy/__init__.py
@@ -1041,7 +1041,6 @@
         uint64_t metadata_size;
         uint32_t num_registers;
         uint64_t num_instructions;
-        uint64_t num_custom_gates;
     }
 
 This is immediately followed by ``name_size`` bytes of utf8 data for the name
@@ -1074,7 +1073,6 @@
         uint64_t metadata_size;
         uint32_t num_registers;
         uint64_t num_instructions;
-        uint64_t num_custom_gates;
     }
 
 This is immediately followed by ``name_size`` bytes of utf8 data for the name