diff --git a/include/jemalloc/internal/mutex_prof.h b/include/jemalloc/internal/mutex_prof.h
index f7301c88..1cc198d6 100644
--- a/include/jemalloc/internal/mutex_prof.h
+++ b/include/jemalloc/internal/mutex_prof.h
@@ -50,7 +50,7 @@ typedef enum {
 	mutex_prof_num_counters
 } mutex_prof_counter_ind_t;
 
-typedef struct mutex_prof_data_s {
+typedef struct {
 	/*
 	 * Counters touched on the slow path, i.e. when there is lock
 	 * contention.  We update them once we have the lock.
diff --git a/include/jemalloc/internal/mutex_types.h b/include/jemalloc/internal/mutex_types.h
index e6589374..5af8d099 100644
--- a/include/jemalloc/internal/mutex_types.h
+++ b/include/jemalloc/internal/mutex_types.h
@@ -1,7 +1,6 @@
 #ifndef JEMALLOC_INTERNAL_MUTEX_TYPES_H
 #define JEMALLOC_INTERNAL_MUTEX_TYPES_H
 
-typedef struct mutex_prof_data_s mutex_prof_data_t;
 typedef struct malloc_mutex_s malloc_mutex_t;
 
 /*