diff --git a/Include/cpython/optimizer.h b/Include/cpython/optimizer.h
index 6d7b8bc3c1433a..df83e6d16a429d 100644
--- a/Include/cpython/optimizer.h
+++ b/Include/cpython/optimizer.h
@@ -65,7 +65,7 @@ typedef int (*optimize_func)(
     _Py_CODEUNIT *instr, _PyExecutorObject **exec_ptr,
     int curr_stackentries);
 
-typedef struct _PyOptimizerObject {
+struct _PyOptimizerObject {
     PyObject_HEAD
     optimize_func optimize;
     /* These thresholds are treated as signed so do not exceed INT16_MAX
@@ -74,7 +74,7 @@ typedef struct _PyOptimizerObject {
     uint16_t side_threshold;
     uint16_t backedge_threshold;
     /* Data needed by the optimizer goes here, but is opaque to the VM */
-} _PyOptimizerObject;
+};
 
 /** Test support **/
 typedef struct {