diff --git a/ble/sm.c b/ble/sm.c
index a3dc75761..1481fee6d 100644
--- a/ble/sm.c
+++ b/ble/sm.c
@@ -1620,7 +1620,7 @@ void sm_set_accepted_stk_generation_methods(uint8_t accepted_stk_generation_meth
     sm_accepted_stk_generation_methods = accepted_stk_generation_methods;
 }
 
-void sm_set_encrypted_key_size_range(uint8_t min_size, uint8_t max_size){
+void sm_set_encryption_key_size_range(uint8_t min_size, uint8_t max_size){
 	sm_min_encryption_key_size = min_size;
 	sm_max_encryption_key_size = max_size;
 }
diff --git a/ble/sm.h b/ble/sm.h
index 19eb93166..71e2323e5 100644
--- a/ble/sm.h
+++ b/ble/sm.h
@@ -135,7 +135,7 @@ void sm_register_oob_data_callback( int (*get_oob_data_callback)(uint8_t addres_
 void sm_register_packet_handler(btstack_packet_handler_t handler);
 
 void sm_set_accepted_stk_generation_methods(uint8_t accepted_stk_generation_methods);
-void sm_set_encrypted_key_size_range(uint8_t min_size, uint8_t max_size);
+void sm_set_encryption_key_size_range(uint8_t min_size, uint8_t max_size);
 void sm_set_authentication_requirements(uint8_t auth_req);
 void sm_set_io_capabilities(io_capability_t io_capability);
 void sm_set_request_security(int enable);
diff --git a/ble/sm_minimal.c b/ble/sm_minimal.c
index 07dad3013..33beeadc6 100644
--- a/ble/sm_minimal.c
+++ b/ble/sm_minimal.c
@@ -71,7 +71,7 @@ void sm_set_ir(sm_key_t ir){}
 void sm_register_oob_data_callback( int (*get_oob_data_callback)(uint8_t addres_type, bd_addr_t * addr, uint8_t * oob_data)){}
 
 void sm_set_accepted_stk_generation_methods(uint8_t accepted_stk_generation_methods){}
-void sm_set_encrypted_key_size_range(uint8_t min_size, uint8_t max_size){}
+void sm_set_encryption_key_size_range(uint8_t min_size, uint8_t max_size){}
 void sm_set_authentication_requirements(uint8_t auth_req){}
 void sm_set_io_capabilities(io_capability_t io_capability){}
 void sm_set_request_security(int enable){}
diff --git a/example/libusb/ble_peripheral.c b/example/libusb/ble_peripheral.c
index a4509a228..a59223986 100644
--- a/example/libusb/ble_peripheral.c
+++ b/example/libusb/ble_peripheral.c
@@ -206,7 +206,7 @@ void setup(void){
     sm_set_io_capabilities(IO_CAPABILITY_DISPLAY_ONLY);
     sm_set_authentication_requirements( SM_AUTHREQ_BONDING | SM_AUTHREQ_MITM_PROTECTION); 
     // sm_set_request_security(1);
-    // sm_set_encrypted_key_size_range(7,15);
+    // sm_set_encryption_key_size_range(7,15);
 
     // setup ATT server
     att_server_init(profile_data, NULL, att_write_callback);