diff --git a/README.md b/README.md
index e6902b5..c1fca7d 100644
--- a/README.md
+++ b/README.md
@@ -48,7 +48,6 @@ The following list is a small part of the available, but the most often required
 | ---- | -------- |
 | `LTC_NO_TEST` | Remove all algorithm self-tests from the library |
 | `LTC_NO_FILE` | Remove all API functions requiring a pre-defined `FILE` data-type (mostly useful for embedded targets) |
-| `MAX_RSA_SIZE` | Per default set to `4096`, if you need support for generating bigger RSA keys, change this at compile-time. |
 | `GMP_DESC` | enable [gmp](https://gmplib.org/) as MPI provider *\*1* |
 | `LTM_DESC` | enable [libtommath](http://www.libtom.net/) as MPI provider *\*1* |
 | `TFM_DESC` | enable [tomsfastmath](http://www.libtom.net/) as MPI provider *\*1* *\*2* |
diff --git a/demos/demo_dynamic.py b/demos/demo_dynamic.py
index dbfb10a..a0699e4 100644
--- a/demos/demo_dynamic.py
+++ b/demos/demo_dynamic.py
@@ -150,7 +150,7 @@ if SHOW_SELECTED_CONSTANTS:
         b'ENDIAN_LITTLE',
         b'ENDIAN_64BITWORD',
         b'PK_PUBLIC',
-        b'MAX_RSA_SIZE',
+        b'LTC_MILLER_RABIN_REPS',
         b'CTR_COUNTER_BIG_ENDIAN',
     ]
     for name in names:
diff --git a/src/headers/tomcrypt_custom.h b/src/headers/tomcrypt_custom.h
index 66c6afc..923400a 100644
--- a/src/headers/tomcrypt_custom.h
+++ b/src/headers/tomcrypt_custom.h
@@ -425,19 +425,6 @@
 #define LTC_ECC_TIMING_RESISTANT
 #endif
 
-/* define these PK sizes out of LTC_NO_PK
- * to have them always defined
- */
-#if defined(LTC_MRSA)
-/* Min and Max RSA key sizes (in bits) */
-#ifndef MIN_RSA_SIZE
-#define MIN_RSA_SIZE 1024
-#endif
-#ifndef MAX_RSA_SIZE
-#define MAX_RSA_SIZE 4096
-#endif
-#endif
-
 /* PKCS #1 (RSA) and #5 (Password Handling) stuff */
 #ifndef LTC_NO_PKCS
 
diff --git a/src/misc/crypt/crypt_constants.c b/src/misc/crypt/crypt_constants.c
index 496d257..a7418d5 100644
--- a/src/misc/crypt/crypt_constants.c
+++ b/src/misc/crypt/crypt_constants.c
@@ -77,8 +77,6 @@ static const crypt_constant _crypt_constants[] = {
 
 #ifdef LTC_MRSA
     {"LTC_MRSA", 1},
-    _C_STRINGIFY(MIN_RSA_SIZE),
-    _C_STRINGIFY(MAX_RSA_SIZE),
 #else
     {"LTC_MRSA", 0},
 #endif
diff --git a/src/pk/rsa/rsa_make_key.c b/src/pk/rsa/rsa_make_key.c
index 065f733..8ba6ab1 100644
--- a/src/pk/rsa/rsa_make_key.c
+++ b/src/pk/rsa/rsa_make_key.c
@@ -32,10 +32,6 @@ int rsa_make_key(prng_state *prng, int wprng, int size, long e, rsa_key *key)
    LTC_ARGCHK(ltc_mp.name != NULL);
    LTC_ARGCHK(key         != NULL);
 
-   if ((size < (MIN_RSA_SIZE/8)) || (size > (MAX_RSA_SIZE/8))) {
-      return CRYPT_INVALID_KEYSIZE;
-   }
-
    if ((e < 3) || ((e & 1) == 0)) {
       return CRYPT_INVALID_ARG;
    }
diff --git a/tests/rsa_test.c b/tests/rsa_test.c
index 79f49ca..998bdda 100644
--- a/tests/rsa_test.c
+++ b/tests/rsa_test.c
@@ -313,10 +313,10 @@ static int _rsa_key_cmp(const int should_type, const rsa_key *should, const rsa_
 static int _rsa_issue_301(int prng_idx)
 {
    rsa_key       key, key_in;
-   unsigned char buf[MAX_RSA_SIZE];
+   unsigned char buf[4096];
    unsigned long len;
 
-   DO(rsa_make_key(&yarrow_prng, prng_idx, MAX_RSA_SIZE/8, 65537, &key));
+   DO(rsa_make_key(&yarrow_prng, prng_idx, sizeof(buf)/8, 65537, &key));
 
    len = sizeof(buf);
    DO(rsa_export(buf, &len, PK_PRIVATE, &key));