diff --git a/src/modules/Si443x/Si4430.cpp b/src/modules/Si443x/Si4430.cpp
index 9de46ae1..c8b030cb 100644
--- a/src/modules/Si443x/Si4430.cpp
+++ b/src/modules/Si443x/Si4430.cpp
@@ -1,5 +1,5 @@
 #include "Si4430.h"
-#if !defined(RADIOLIB_EXCLUDE_SI443X)
+#if !RADIOLIB_EXCLUDE_SI443X
 
 Si4430::Si4430(Module* mod) : Si4432(mod) {
 
diff --git a/src/modules/Si443x/Si4430.h b/src/modules/Si443x/Si4430.h
index 5b073509..6acac97d 100644
--- a/src/modules/Si443x/Si4430.h
+++ b/src/modules/Si443x/Si4430.h
@@ -3,7 +3,7 @@
 
 #include "../../TypeDef.h"
 
-#if !defined(RADIOLIB_EXCLUDE_SI443X)
+#if !RADIOLIB_EXCLUDE_SI443X
 
 #include "../../Module.h"
 #include "Si4432.h"
@@ -53,11 +53,11 @@ class Si4430: public Si4432 {
     */
     int16_t setOutputPower(int8_t power);
 
-#if !defined(RADIOLIB_GODMODE)
+#if !RADIOLIB_GODMODE
   protected:
 #endif
 
-#if !defined(RADIOLIB_GODMODE)
+#if !RADIOLIB_GODMODE
   private:
 #endif
 };
diff --git a/src/modules/Si443x/Si4431.cpp b/src/modules/Si443x/Si4431.cpp
index 566b245a..953c888f 100644
--- a/src/modules/Si443x/Si4431.cpp
+++ b/src/modules/Si443x/Si4431.cpp
@@ -1,5 +1,5 @@
 #include "Si4431.h"
-#if !defined(RADIOLIB_EXCLUDE_SI443X)
+#if !RADIOLIB_EXCLUDE_SI443X
 
 Si4431::Si4431(Module* mod) : Si4432(mod) {
 
diff --git a/src/modules/Si443x/Si4431.h b/src/modules/Si443x/Si4431.h
index 8ca35a34..8d3d9dd9 100644
--- a/src/modules/Si443x/Si4431.h
+++ b/src/modules/Si443x/Si4431.h
@@ -3,7 +3,7 @@
 
 #include "../../TypeDef.h"
 
-#if !defined(RADIOLIB_EXCLUDE_SI443X)
+#if !RADIOLIB_EXCLUDE_SI443X
 
 #include "../../Module.h"
 #include "Si4432.h"
@@ -46,11 +46,11 @@ class Si4431: public Si4432 {
     */
     int16_t setOutputPower(int8_t power);
 
-#if !defined(RADIOLIB_GODMODE)
+#if !RADIOLIB_GODMODE
   protected:
 #endif
 
-#if !defined(RADIOLIB_GODMODE)
+#if !RADIOLIB_GODMODE
   private:
 #endif
 };
diff --git a/src/modules/Si443x/Si4432.cpp b/src/modules/Si443x/Si4432.cpp
index 0f679d67..12c212ef 100644
--- a/src/modules/Si443x/Si4432.cpp
+++ b/src/modules/Si443x/Si4432.cpp
@@ -1,5 +1,5 @@
 #include "Si4432.h"
-#if !defined(RADIOLIB_EXCLUDE_SI443X)
+#if !RADIOLIB_EXCLUDE_SI443X
 
 Si4432::Si4432(Module* mod) : Si443x(mod) {
 
diff --git a/src/modules/Si443x/Si4432.h b/src/modules/Si443x/Si4432.h
index 3903a5ac..b0a8cb87 100644
--- a/src/modules/Si443x/Si4432.h
+++ b/src/modules/Si443x/Si4432.h
@@ -3,7 +3,7 @@
 
 #include "../../TypeDef.h"
 
-#if !defined(RADIOLIB_EXCLUDE_SI443X)
+#if !RADIOLIB_EXCLUDE_SI443X
 
 #include "../../Module.h"
 #include "Si443x.h"
@@ -53,11 +53,11 @@ class Si4432: public Si443x {
     */
     int16_t setOutputPower(int8_t power);
 
-#if !defined(RADIOLIB_GODMODE)
+#if !RADIOLIB_GODMODE
   protected:
 #endif
 
-#if !defined(RADIOLIB_GODMODE)
+#if !RADIOLIB_GODMODE
   private:
 #endif
 };
diff --git a/src/modules/Si443x/Si443x.cpp b/src/modules/Si443x/Si443x.cpp
index 2b2bf835..95ad385a 100644
--- a/src/modules/Si443x/Si443x.cpp
+++ b/src/modules/Si443x/Si443x.cpp
@@ -1,6 +1,6 @@
 #include "Si443x.h"
 #include <math.h>
-#if !defined(RADIOLIB_EXCLUDE_SI443X)
+#if !RADIOLIB_EXCLUDE_SI443X
 
 Si443x::Si443x(Module* mod) : PhysicalLayer(RADIOLIB_SI443X_FREQUENCY_STEP_SIZE, RADIOLIB_SI443X_MAX_PACKET_LENGTH) {
   this->mod = mod;
@@ -623,7 +623,7 @@ int16_t Si443x::getChipVersion() {
   return(this->mod->SPIgetRegValue(RADIOLIB_SI443X_REG_DEVICE_VERSION));
 }
 
-#if !defined(RADIOLIB_EXCLUDE_DIRECT_RECEIVE)
+#if !RADIOLIB_EXCLUDE_DIRECT_RECEIVE
 void Si443x::setDirectAction(void (*func)(void)) {
   setIrqAction(func);
 }
diff --git a/src/modules/Si443x/Si443x.h b/src/modules/Si443x/Si443x.h
index 463b6851..ca83ba12 100644
--- a/src/modules/Si443x/Si443x.h
+++ b/src/modules/Si443x/Si443x.h
@@ -3,7 +3,7 @@
 
 #include "../../TypeDef.h"
 
-#if !defined(RADIOLIB_EXCLUDE_SI443X)
+#if !RADIOLIB_EXCLUDE_SI443X
 
 #include "../../Module.h"
 
@@ -797,7 +797,7 @@ class Si443x: public PhysicalLayer {
    */
     int16_t getChipVersion();
 
-    #if !defined(RADIOLIB_EXCLUDE_DIRECT_RECEIVE)
+    #if !RADIOLIB_EXCLUDE_DIRECT_RECEIVE
     /*!
       \brief Set interrupt service routine function to call when data bit is received in direct mode.
       \param func Pointer to interrupt service routine.
@@ -825,12 +825,12 @@ class Si443x: public PhysicalLayer {
    */
    int16_t variablePacketLengthMode(uint8_t maxLen = RADIOLIB_SI443X_MAX_PACKET_LENGTH);
 
-#if !defined(RADIOLIB_GODMODE) && !defined(RADIOLIB_LOW_LEVEL)
+#if !RADIOLIB_GODMODE && !RADIOLIB_LOW_LEVEL
   protected:
 #endif
     Module* mod;
 
-#if !defined(RADIOLIB_GODMODE)
+#if !RADIOLIB_GODMODE
   protected:
 #endif
 
@@ -845,7 +845,7 @@ class Si443x: public PhysicalLayer {
     int16_t setFrequencyRaw(float newFreq);
     int16_t setPacketMode(uint8_t mode, uint8_t len);
 
-#if !defined(RADIOLIB_GODMODE)
+#if !RADIOLIB_GODMODE
   private:
 #endif
     bool findChip();