diff --git a/ble/att.c b/ble/att.c
index b3e2f2689..cc9463707 100644
--- a/ble/att.c
+++ b/ble/att.c
@@ -1055,7 +1055,7 @@ uint16_t att_handle_request(att_connection_t * att_connection,
         case ATT_WRITE_COMMAND:
             handle_write_command(att_connection, request_buffer, request_len, response_buffer, response_buffer_size);
             break;
-        case ATT_SIGNED_WRITE_COMAND:
+        case ATT_SIGNED_WRITE_COMMAND:
             printf("handle_signed_write_command preprocessed by att_server.c\n");
             break;
         default:
diff --git a/ble/att.h b/ble/att.h
index b059f0823..2c69f57a7 100644
--- a/ble/att.h
+++ b/ble/att.h
@@ -78,8 +78,8 @@ extern "C" {
 #define ATT_HANDLE_VALUE_CONFIRMATION   0x1e
 
 
-#define ATT_WRITE_COMMAND               0x52
-#define ATT_SIGNED_WRITE_COMAND         0xD2
+#define ATT_WRITE_COMMAND                0x52
+#define ATT_SIGNED_WRITE_COMMAND         0xD2
 
 // MARK: ATT Error Codes
 #define ATT_ERROR_INVALID_HANDLE                   0x01
diff --git a/ble/att_server.c b/ble/att_server.c
index 9cc42af28..265287426 100644
--- a/ble/att_server.c
+++ b/ble/att_server.c
@@ -213,7 +213,7 @@ static void att_run(void){
         case ATT_SERVER_W4_SIGNED_WRITE_VALIDATION:
             return;
         case ATT_SERVER_REQUEST_RECEIVED:
-            if (att_request_buffer[0] == ATT_SIGNED_WRITE_COMAND){
+            if (att_request_buffer[0] == ATT_SIGNED_WRITE_COMMAND){
                 printf("ATT Signed Write!\n");
                 if (!sm_cmac_ready()) {
                     printf("ATT Signed Write, sm_cmac engine not ready. Abort\n");