diff --git a/src/ocsp.c b/src/ocsp.c
index 8b93c1748a..fcdec17887 100644
--- a/src/ocsp.c
+++ b/src/ocsp.c
@@ -1634,8 +1634,7 @@ int wolfSSL_OCSP_REQ_CTX_nbio(WOLFSSL_OCSP_REQ_CTX *ctx)
         case ORIOS_WRITE:
         {
             const unsigned char *req;
-            int reqLen = wolfSSL_BIO_get_mem_data(ctx->reqResp,
-                (unsigned char*)&req);
+            int reqLen = wolfSSL_BIO_get_mem_data(ctx->reqResp, (void*)&req);
             if (reqLen <= 0) {
                 WOLFSSL_MSG("wolfSSL_BIO_get_mem_data error");
                 return WOLFSSL_FAILURE;
@@ -1711,8 +1710,7 @@ int wolfSSL_OCSP_sendreq_nbio(OcspResponse **presp, WOLFSSL_OCSP_REQ_CTX *ctx)
     if (ret != WOLFSSL_SUCCESS)
         return ret;
 
-    len = wolfSSL_BIO_get_mem_data(ctx->reqResp,
-        (unsigned char*)&resp);
+    len = wolfSSL_BIO_get_mem_data(ctx->reqResp, (void*)&resp);
     if (len <= 0)
         return WOLFSSL_FAILURE;
     return wolfSSL_d2i_OCSP_RESPONSE(presp, &resp, len) != NULL
diff --git a/src/tls.c b/src/tls.c
index a85ce19223..85231572c6 100644
--- a/src/tls.c
+++ b/src/tls.c
@@ -7168,15 +7168,16 @@ static int TLSX_CA_Names_Parse(WOLFSSL *ssl, const byte* input,
     return 0;
 }
 
-#define CAN_GET_SIZE  TLSX_CA_Names_GetSize
-#define CAN_WRITE     TLSX_CA_Names_Write
-#define CAN_PARSE     TLSX_CA_Names_Parse
+#define CAN_GET_SIZE(data)      TLSX_CA_Names_GetSize(data)
+#define CAN_WRITE(data, output) TLSX_CA_Names_Write(data, output)
+#define CAN_PARSE(ssl, input, length, isRequest) \
+                                TLSX_CA_Names_Parse(ssl, input, length, isRequest)
 
 #else
 
-#define CAN_GET_SIZE()  0
-#define CAN_WRITE()     0
-#define CAN_PARSE()     0
+#define CAN_GET_SIZE(data)                       0
+#define CAN_WRITE(data, output)                  0
+#define CAN_PARSE(ssl, input, length, isRequest) 0
 
 #endif
 
@@ -14762,9 +14763,9 @@ static word16 TLSX_GetMinSize_Client(word16* type)
             return 0;
     }
 }
-    #define TLSX_GET_MIN_SIZE_CLIENT TLSX_GetMinSize_Client
+    #define TLSX_GET_MIN_SIZE_CLIENT(type) TLSX_GetMinSize_Client(type)
 #else
-    #define TLSX_GET_MIN_SIZE_CLIENT() 0
+    #define TLSX_GET_MIN_SIZE_CLIENT(type) 0
 #endif
 
 
@@ -14831,9 +14832,9 @@ static word16 TLSX_GetMinSize_Server(const word16 *type)
             return 0;
     }
 }
-    #define TLSX_GET_MIN_SIZE_SERVER TLSX_GetMinSize_Server
+    #define TLSX_GET_MIN_SIZE_SERVER(type) TLSX_GetMinSize_Server(type)
 #else
-    #define TLSX_GET_MIN_SIZE_SERVER() 0
+    #define TLSX_GET_MIN_SIZE_SERVER(type) 0
 #endif
 
 
diff --git a/wolfssl/wolfcrypt/logging.h b/wolfssl/wolfcrypt/logging.h
index 3d3e923bd3..fe2e108ee8 100644
--- a/wolfssl/wolfcrypt/logging.h
+++ b/wolfssl/wolfcrypt/logging.h
@@ -178,7 +178,11 @@ WOLFSSL_API void wolfSSL_SetLoggingPrefix(const char* prefix);
     WOLFSSL_API void WOLFSSL_MSG_EX(const char* fmt, ...);
     #define HAVE_WOLFSSL_MSG_EX
 #else
-    #define WOLFSSL_MSG_EX() WC_DO_NOTHING
+    #ifdef __WATCOMC__ /* does not allow variadic macros */
+        #define WOLFSSL_MSG_EX()    WC_DO_NOTHING
+    #else
+        #define WOLFSSL_MSG_EX(...) WC_DO_NOTHING
+    #endif
 #endif
     WOLFSSL_API void WOLFSSL_MSG(const char* msg);
 #ifdef WOLFSSL_DEBUG_CODEPOINTS
@@ -209,7 +213,11 @@ WOLFSSL_API void wolfSSL_SetLoggingPrefix(const char* prefix);
     #define WOLFSSL_STUB(m)       WC_DO_NOTHING
     #define WOLFSSL_IS_DEBUG_ON() 0
 
-    #define WOLFSSL_MSG_EX(...)   WC_DO_NOTHING
+    #ifdef __WATCOMC__ /* does not allow variadic macros */
+        #define WOLFSSL_MSG_EX()    WC_DO_NOTHING
+    #else
+        #define WOLFSSL_MSG_EX(...) WC_DO_NOTHING
+    #endif
     #define WOLFSSL_MSG(m)        WC_DO_NOTHING
     #define WOLFSSL_BUFFER(b, l)  WC_DO_NOTHING