diff --git a/extmod/modubinascii.c b/extmod/modubinascii.c
index dc41d1dc9..562c754b5 100644
--- a/extmod/modubinascii.c
+++ b/extmod/modubinascii.c
@@ -204,6 +204,7 @@ mp_obj_t mod_binascii_b2a_base64(mp_obj_t data) {
 }
 MP_DEFINE_CONST_FUN_OBJ_1(mod_binascii_b2a_base64_obj, mod_binascii_b2a_base64);
 
+#if MICROPY_PY_UBINASCII_CRC32
 mp_obj_t mod_binascii_crc32(size_t n_args, const mp_obj_t *args) {
     mp_buffer_info_t bufinfo;
     mp_get_buffer_raise(args[0], &bufinfo, MP_BUFFER_READ);
@@ -212,6 +213,7 @@ mp_obj_t mod_binascii_crc32(size_t n_args, const mp_obj_t *args) {
     return MP_OBJ_NEW_SMALL_INT(crc ^ 0xffffffff);
 }
 MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mod_binascii_crc32_obj, 1, 2, mod_binascii_crc32);
+#endif
 
 #if MICROPY_PY_UBINASCII
 
@@ -221,7 +223,9 @@ STATIC const mp_rom_map_elem_t mp_module_binascii_globals_table[] = {
     { MP_ROM_QSTR(MP_QSTR_unhexlify), MP_ROM_PTR(&mod_binascii_unhexlify_obj) },
     { MP_ROM_QSTR(MP_QSTR_a2b_base64), MP_ROM_PTR(&mod_binascii_a2b_base64_obj) },
     { MP_ROM_QSTR(MP_QSTR_b2a_base64), MP_ROM_PTR(&mod_binascii_b2a_base64_obj) },
+    #if MICROPY_PY_UBINASCII_CRC32
     { MP_ROM_QSTR(MP_QSTR_crc32), MP_ROM_PTR(&mod_binascii_crc32_obj) },
+    #endif
 };
 
 STATIC MP_DEFINE_CONST_DICT(mp_module_binascii_globals, mp_module_binascii_globals_table);
diff --git a/py/mpconfig.h b/py/mpconfig.h
index 3808df743..491a53746 100644
--- a/py/mpconfig.h
+++ b/py/mpconfig.h
@@ -887,6 +887,11 @@ typedef double mp_float_t;
 #define MICROPY_PY_UBINASCII (0)
 #endif
 
+// Depends on MICROPY_PY_UZLIB
+#ifndef MICROPY_PY_UBINASCII_CRC32
+#define MICROPY_PY_UBINASCII_CRC32 (0)
+#endif
+
 #ifndef MICROPY_PY_URANDOM
 #define MICROPY_PY_URANDOM (0)
 #endif
diff --git a/tests/extmod/ubinascii_crc32.py b/tests/extmod/ubinascii_crc32.py
index cb86603d5..2c4017751 100644
--- a/tests/extmod/ubinascii_crc32.py
+++ b/tests/extmod/ubinascii_crc32.py
@@ -2,6 +2,12 @@ try:
     import ubinascii as binascii
 except ImportError:
     import binascii
+try:
+    binascii.crc32
+except AttributeError:
+    print("SKIP")
+    import sys
+    sys.exit()
 
 print(hex(binascii.crc32(b'The quick brown fox jumps over the lazy dog')))
 print(hex(binascii.crc32(b'\x00' * 32)))
diff --git a/unix/mpconfigport.h b/unix/mpconfigport.h
index 9845e1ce5..56cfaa2ac 100644
--- a/unix/mpconfigport.h
+++ b/unix/mpconfigport.h
@@ -117,6 +117,7 @@
 #define MICROPY_PY_UHASHLIB_SHA1    (1)
 #endif
 #define MICROPY_PY_UBINASCII        (1)
+#define MICROPY_PY_UBINASCII_CRC32  (1)
 #define MICROPY_PY_URANDOM          (1)
 #ifndef MICROPY_PY_USELECT
 #define MICROPY_PY_USELECT          (1)