diff --git a/Include/floatobject.h b/Include/floatobject.h
index 04978be..60ede40 100644
--- a/Include/floatobject.h
+++ b/Include/floatobject.h
@@ -113,7 +113,7 @@
 PyAPI_FUNC(double) _PyFloat_Unpack8(const unsigned char *p, int le);
 
 /* free list api */
-PyAPI_FUNC(void) PyFloat_CompactFreeList(size_t *, size_t *, size_t *);
+PyAPI_FUNC(int) PyFloat_ClearFreeList(void);
 
 /* Format the object based on the format_spec, as defined in PEP 3101
    (Advanced String Formatting). */