diff --git a/m-serial-json.h b/m-serial-json.h
index 2803c96b..e0de2944 100644
--- a/m-serial-json.h
+++ b/m-serial-json.h
@@ -167,17 +167,13 @@ m_serial_json_read_boolean(m_serial_read_t serial, bool *b){
 static inline  m_serial_return_code_t
 m_serial_json_read_integer(m_serial_read_t serial, long long *i){
   FILE *f = (FILE*) serial->data[0];
-  int c = m_serial_json_read_skip(f);
-  ungetc(c, f);
-  return fscanf(f, "%lld", i) == 1 ? M_SERIAL_OK_DONE : M_SERIAL_FAIL;
+  return fscanf(f, " %lld", i) == 1 ? M_SERIAL_OK_DONE : M_SERIAL_FAIL;
 }
 
 static inline  m_serial_return_code_t
 m_serial_json_read_float(m_serial_read_t serial, long double *r){
   FILE *f = (FILE*) serial->data[0];  
-  int c = m_serial_json_read_skip(f);
-  ungetc(c, f);
-  return fscanf(f, "%Lf", r) == 1 ? M_SERIAL_OK_DONE : M_SERIAL_FAIL;
+  return fscanf(f, " %Lf", r) == 1 ? M_SERIAL_OK_DONE : M_SERIAL_FAIL;
 }
 
 static inline  m_serial_return_code_t m_serial_json_read_string(m_serial_read_t serial, struct string_s *s){ return M_SERIAL_FAIL; }