diff --git a/src/osd/OSDMap.cc b/src/osd/OSDMap.cc
index 8d291474d3d..c13f64a4a69 100644
--- a/src/osd/OSDMap.cc
+++ b/src/osd/OSDMap.cc
@@ -2223,15 +2223,6 @@ void OSDMap::dump_erasure_code_profiles(const map<string,map<string,string> > &p
   f->close_section();
 }
 
-void OSDMap::dump_json(ostream& out) const
-{
-  JSONFormatter jsf(true);
-  jsf.open_object_section("osdmap");
-  dump(&jsf);
-  jsf.close_section();
-  jsf.flush(out);
-}
-
 void OSDMap::dump(Formatter *f) const
 {
   f->dump_int("epoch", get_epoch());
diff --git a/src/osd/OSDMap.h b/src/osd/OSDMap.h
index 643ee106b33..7c87dbaa384 100644
--- a/src/osd/OSDMap.h
+++ b/src/osd/OSDMap.h
@@ -848,7 +848,6 @@ public:
   static string get_flag_string(unsigned flags);
   static void dump_erasure_code_profiles(const map<string,map<string,string> > &profiles,
 					 Formatter *f);
-  void dump_json(ostream& out) const;
   void dump(Formatter *f) const;
   static void generate_test_instances(list<OSDMap*>& o);
   bool check_new_blacklist_entries() const { return new_blacklist_entries; }