diff --git a/wolfcrypt/src/port/nxp/casper_port.c b/wolfcrypt/src/port/nxp/casper_port.c
index dc772766ea..925458832f 100644
--- a/wolfcrypt/src/port/nxp/casper_port.c
+++ b/wolfcrypt/src/port/nxp/casper_port.c
@@ -42,7 +42,7 @@ int wc_casper_init(void)
     return 0;
 }
 
-#if !defined(NO_RSA) && !defined(WOLFSSL_NXP_CASPER_NO_RSA)
+#if !defined(NO_RSA) && defined(WOLFSSL_NXP_CASPER_RSA_PUB_EXPTMOD)
 
 #define CASPER_MAX_BUF_SZ   512
 static uint8_t key_buf[CASPER_MAX_BUF_SZ];
diff --git a/wolfcrypt/src/rsa.c b/wolfcrypt/src/rsa.c
index 8df1031b7b..57b310f1b1 100644
--- a/wolfcrypt/src/rsa.c
+++ b/wolfcrypt/src/rsa.c
@@ -56,7 +56,7 @@ RSA keys can be used to encrypt, decrypt, sign and verify data.
 #ifdef WOLFSSL_HAVE_SP_RSA
 #include <wolfssl/wolfcrypt/sp.h>
 #endif
-#if defined(WOLFSSL_NXP_CASPER) && !defined(WOLFSSL_NXP_CASPER_NO_RSA)
+#if defined(WOLFSSL_NXP_CASPER_RSA_PUB_EXPTMOD)
 #include <wolfssl/wolfcrypt/port/nxp/casper_port.h>
 #endif
 
@@ -2415,7 +2415,7 @@ static int wc_RsaFunctionSync(const byte* in, word32 inLen, byte* out,
     return ret;
 }
 
-#elif defined(WOLFSSL_NXP_CASPER) && !defined(WOLFSSL_NXP_CASPER_NO_RSA)
+#elif defined(WOLFSSL_NXP_CASPER_RSA_PUB_EXPTMOD)
 static int wc_RsaFunctionSync(const byte* in, word32 inLen, byte* out,
                               word32* outLen, int type, RsaKey* key,
                               WC_RNG* rng)
diff --git a/wolfssl/wolfcrypt/port/nxp/casper_port.h b/wolfssl/wolfcrypt/port/nxp/casper_port.h
index a61cd2be4a..b89ca6e982 100644
--- a/wolfssl/wolfcrypt/port/nxp/casper_port.h
+++ b/wolfssl/wolfcrypt/port/nxp/casper_port.h
@@ -25,7 +25,7 @@
 
 int wc_casper_init(void);
 
-#if !defined(NO_RSA) && !defined(WOLFSSL_NXP_CASPER_NO_RSA)
+#if !defined(NO_RSA) && defined(WOLFSSL_NXP_CASPER_RSA_PUB_EXPTMOD)
 
 #include <wolfssl/wolfcrypt/rsa.h>
 
diff --git a/wolfssl/wolfcrypt/settings.h b/wolfssl/wolfcrypt/settings.h
index bb0b879a60..a4db8957ce 100644
--- a/wolfssl/wolfcrypt/settings.h
+++ b/wolfssl/wolfcrypt/settings.h
@@ -2104,6 +2104,8 @@ extern void uITRON4_free(void *p) ;
         #define WOLFSSL_NXP_HASHCRYPT
         #define WOLFSSL_NXP_HASHCRYPT_SHA
         #define WOLFSSL_NXP_HASHCRYPT_SHA256
+        #define WOLFSSL_NXP_CASPER
+        #define WOLFSSL_NXP_CASPER_RSA_PUB_EXPTMOD
     #endif
 #endif /* WOLFSSL_NXP_LPC55S69 */