diff --git a/src/protocols/AX25/AX25.cpp b/src/protocols/AX25/AX25.cpp
index fc3e24e0..3c60072e 100644
--- a/src/protocols/AX25/AX25.cpp
+++ b/src/protocols/AX25/AX25.cpp
@@ -1,6 +1,6 @@
 #include "AX25.h"
 #include <string.h>
-#if !defined(RADIOLIB_EXCLUDE_AX25)
+#if !RADIOLIB_EXCLUDE_AX25
 
 AX25Frame::AX25Frame(const char* destCallsign, uint8_t destSSID, const char* srcCallsign, uint8_t srcSSID, uint8_t control)
 : AX25Frame(destCallsign, destSSID, srcCallsign, srcSSID, control, 0, NULL, 0) {
@@ -25,7 +25,7 @@ AX25Frame::AX25Frame(const char* destCallsign, uint8_t destSSID, const char* src
 
   // set repeaters
   this->numRepeaters = 0;
-  #if !defined(RADIOLIB_STATIC_ONLY)
+  #if !RADIOLIB_STATIC_ONLY
     this->repeaterCallsigns = NULL;
     this->repeaterSSIDs = NULL;
   #endif
@@ -43,7 +43,7 @@ AX25Frame::AX25Frame(const char* destCallsign, uint8_t destSSID, const char* src
   // info field
   this->infoLen = infoLen;
   if(infoLen > 0) {
-    #if !defined(RADIOLIB_STATIC_ONLY)
+    #if !RADIOLIB_STATIC_ONLY
       this->info = new uint8_t[infoLen];
     #endif
     memcpy(this->info, info, infoLen);
@@ -55,7 +55,7 @@ AX25Frame::AX25Frame(const AX25Frame& frame) {
 }
 
 AX25Frame::~AX25Frame() {
-  #if !defined(RADIOLIB_STATIC_ONLY)
+  #if !RADIOLIB_STATIC_ONLY
     // deallocate info field
     if(infoLen > 0) {
       delete[] this->info;
@@ -124,7 +124,7 @@ int16_t AX25Frame::setRepeaters(char** repeaterCallsigns, uint8_t* repeaterSSIDs
   }
 
   // create buffers
-  #if !defined(RADIOLIB_STATIC_ONLY)
+  #if !RADIOLIB_STATIC_ONLY
     this->repeaterCallsigns = new char*[numRepeaters];
     for(uint8_t i = 0; i < numRepeaters; i++) {
       this->repeaterCallsigns[i] = new char[strlen(repeaterCallsigns[i]) + 1];
@@ -153,12 +153,12 @@ void AX25Frame::setSendSequence(uint8_t seqNumber) {
 
 AX25Client::AX25Client(PhysicalLayer* phy) {
   phyLayer = phy;
-  #if !defined(RADIOLIB_EXCLUDE_AFSK)
+  #if !RADIOLIB_EXCLUDE_AFSK
   bellModem = nullptr;
   #endif
 }
 
-#if !defined(RADIOLIB_EXCLUDE_AFSK)
+#if !RADIOLIB_EXCLUDE_AFSK
 AX25Client::AX25Client(AFSKClient* audio) {
   phyLayer = audio->phyLayer;
   bellModem = new BellClient(audio);
@@ -194,7 +194,7 @@ int16_t AX25Client::begin(const char* srcCallsign, uint8_t srcSSID, uint8_t preL
   preambleLen = preLen;
 
   // configure for direct mode
-  #if !defined(RADIOLIB_EXCLUDE_AFSK)
+  #if !RADIOLIB_EXCLUDE_AFSK
   if(bellModem != nullptr) {
     return(phyLayer->startDirect());
   }
@@ -226,7 +226,7 @@ int16_t AX25Client::sendFrame(AX25Frame* frame) {
   }
 
   // check repeater configuration
-  #if !defined(RADIOLIB_STATIC_ONLY)
+  #if !RADIOLIB_STATIC_ONLY
     if(!(((frame->repeaterCallsigns == NULL) && (frame->repeaterSSIDs == NULL) && (frame->numRepeaters == 0)) ||
          ((frame->repeaterCallsigns != NULL) && (frame->repeaterSSIDs != NULL) && (frame->numRepeaters != 0)))) {
       return(RADIOLIB_ERR_INVALID_NUM_REPEATERS);
@@ -241,7 +241,7 @@ int16_t AX25Client::sendFrame(AX25Frame* frame) {
   // calculate frame length without FCS (destination address, source address, repeater addresses, control, PID, info)
   size_t frameBuffLen = ((2 + frame->numRepeaters)*(RADIOLIB_AX25_MAX_CALLSIGN_LEN + 1)) + 1 + 1 + frame->infoLen;
   // create frame buffer without preamble, start or stop flags
-  #if !defined(RADIOLIB_STATIC_ONLY)
+  #if !RADIOLIB_STATIC_ONLY
     uint8_t* frameBuff = new uint8_t[frameBuffLen + 2];
   #else
     uint8_t frameBuff[RADIOLIB_STATIC_ARRAY_SIZE];
@@ -323,7 +323,7 @@ int16_t AX25Client::sendFrame(AX25Frame* frame) {
   *(frameBuffPtr++) = (uint8_t)(fcs & 0xFF);
 
   // prepare buffer for the final frame (stuffed, with added preamble + flags and NRZI-encoded)
-  #if !defined(RADIOLIB_STATIC_ONLY)
+  #if !RADIOLIB_STATIC_ONLY
     // worst-case scenario: sequence of 1s, will have 120% of the original length, stuffed frame also includes both flags
     uint8_t* stuffedFrameBuff = new uint8_t[preambleLen + 1 + (6*frameBuffLen)/5 + 2];
   #else
@@ -367,7 +367,7 @@ int16_t AX25Client::sendFrame(AX25Frame* frame) {
   }
 
   // deallocate memory
-  #if !defined(RADIOLIB_STATIC_ONLY)
+  #if !RADIOLIB_STATIC_ONLY
     delete[] frameBuff;
   #endif
 
@@ -413,7 +413,7 @@ int16_t AX25Client::sendFrame(AX25Frame* frame) {
 
   // transmit
   int16_t state = RADIOLIB_ERR_NONE;
-  #if !defined(RADIOLIB_EXCLUDE_AFSK)
+  #if !RADIOLIB_EXCLUDE_AFSK
   if(bellModem != nullptr) {
     bellModem->idle();
 
@@ -427,12 +427,12 @@ int16_t AX25Client::sendFrame(AX25Frame* frame) {
   } else {
   #endif
     state = phyLayer->transmit(stuffedFrameBuff, stuffedFrameBuffLen);
-  #if !defined(RADIOLIB_EXCLUDE_AFSK)
+  #if !RADIOLIB_EXCLUDE_AFSK
   }
   #endif
 
   // deallocate memory
-  #if !defined(RADIOLIB_STATIC_ONLY)
+  #if !RADIOLIB_STATIC_ONLY
     delete[] stuffedFrameBuff;
   #endif
 
diff --git a/src/protocols/AX25/AX25.h b/src/protocols/AX25/AX25.h
index 9d6c60a6..28ddd5aa 100644
--- a/src/protocols/AX25/AX25.h
+++ b/src/protocols/AX25/AX25.h
@@ -3,7 +3,7 @@
 
 #include "../../TypeDef.h"
 
-#if !defined(RADIOLIB_EXCLUDE_AX25)
+#if !RADIOLIB_EXCLUDE_AX25
 
 #include "../PhysicalLayer/PhysicalLayer.h"
 #include "../AFSK/AFSK.h"
@@ -125,7 +125,7 @@ class AX25Frame {
     */
     uint16_t sendSeqNumber;
 
-    #if !defined(RADIOLIB_STATIC_ONLY)
+    #if !RADIOLIB_STATIC_ONLY
       /*!
         \brief The info field.
       */
@@ -243,7 +243,7 @@ class AX25Client {
     */
     explicit AX25Client(PhysicalLayer* phy);
 
-    #if !defined(RADIOLIB_EXCLUDE_AFSK)
+    #if !RADIOLIB_EXCLUDE_AFSK
     /*!
       \brief Constructor for AFSK mode.
       \param audio Pointer to the AFSK instance providing audio.
@@ -303,13 +303,13 @@ class AX25Client {
     */
     int16_t sendFrame(AX25Frame* frame);
 
-#if !defined(RADIOLIB_GODMODE)
+#if !RADIOLIB_GODMODE
   private:
 #endif
     friend class APRSClient;
 
     PhysicalLayer* phyLayer;
-    #if !defined(RADIOLIB_EXCLUDE_AFSK)
+    #if !RADIOLIB_EXCLUDE_AFSK
     BellClient* bellModem;
     #endif