diff --git a/extmod/machine_mem.c b/extmod/machine_mem.c
index 6c6e110631..8944c3a666 100644
--- a/extmod/machine_mem.c
+++ b/extmod/machine_mem.c
@@ -21,7 +21,7 @@
 STATIC uintptr_t machine_mem_get_addr(mp_obj_t addr_o, uint align) {
     uintptr_t addr = mp_obj_int_get_truncated(addr_o);
     if ((addr & (align - 1)) != 0) {
-        nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_ValueError, translate("address %08x is not aligned to %d bytes"), addr, align));
+        mp_raise_ValueError_varg(translate("address %08x is not aligned to %d bytes"), addr, align);
     }
     return addr;
 }
diff --git a/extmod/moduheapq.c b/extmod/moduheapq.c
index bc4b97ff5b..50fe6c0513 100644
--- a/extmod/moduheapq.c
+++ b/extmod/moduheapq.c
@@ -62,7 +62,7 @@ STATIC MP_DEFINE_CONST_FUN_OBJ_2(mod_uheapq_heappush_obj, mod_uheapq_heappush);
 STATIC mp_obj_t mod_uheapq_heappop(mp_obj_t heap_in) {
     mp_obj_list_t *heap = get_heap(heap_in);
     if (heap->len == 0) {
-        nlr_raise(mp_obj_new_exception_msg(&mp_type_IndexError, translate("empty heap")));
+        mp_raise_IndexError(translate("empty heap"));
     }
     mp_obj_t item = heap->items[0];
     heap->len -= 1;
diff --git a/extmod/vfs_posix_file.c b/extmod/vfs_posix_file.c
index 3f887785e7..593b8d6a29 100644
--- a/extmod/vfs_posix_file.c
+++ b/extmod/vfs_posix_file.c
@@ -24,7 +24,7 @@ typedef struct _mp_obj_vfs_posix_file_t {
 #ifdef MICROPY_CPYTHON_COMPAT
 STATIC void check_fd_is_open(const mp_obj_vfs_posix_file_t *o) {
     if (o->fd < 0) {
-        nlr_raise(mp_obj_new_exception_msg(&mp_type_ValueError, translate("I/O operation on closed file")));
+        mp_raise_ValueError(translate("I/O operation on closed file"));
     }
 }
 #else
diff --git a/py/bc.c b/py/bc.c
index 6406713385..01131cb4c0 100644
--- a/py/bc.c
+++ b/py/bc.c
@@ -214,8 +214,8 @@ void mp_setup_code_state(mp_code_state_t *code_state, size_t n_args, size_t n_kw
                 #if MICROPY_ERROR_REPORTING == MICROPY_ERROR_REPORTING_TERSE
                     mp_raise_TypeError(translate("unexpected keyword argument"));
                 #else
-                    nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_TypeError,
-                        translate("unexpected keyword argument '%q'"), MP_OBJ_QSTR_VALUE(wanted_arg_name)));
+                    mp_raise_TypeError_varg(
+                        translate("unexpected keyword argument '%q'"), MP_OBJ_QSTR_VALUE(wanted_arg_name));
                 #endif
             }
             mp_obj_dict_store(dict, kwargs[2 * i], kwargs[2 * i + 1]);
diff --git a/py/objstr.c b/py/objstr.c
index edb562df27..6a03f5fc3e 100644
--- a/py/objstr.c
+++ b/py/objstr.c
@@ -2134,10 +2134,8 @@ STATIC NORETURN void bad_implicit_conversion(mp_obj_t self_in) {
         mp_raise_TypeError(translate("can't convert to str implicitly"));
     } else {
         const qstr src_name = mp_obj_get_type_qstr(self_in);
-        nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_TypeError,
-            translate("can't convert '%q' object to %q implicitly"),
-            src_name, src_name == MP_QSTR_str ? MP_QSTR_bytes : MP_QSTR_str));
-    }
+        mp_raise_TypeError_varg(translate("can't convert '%q' object to %q implicitly"),
+            src_name, src_name == MP_QSTR_str ? MP_QSTR_bytes : MP_QSTR_str);
 }
 
 // use this if you will anyway convert the string to a qstr