diff --git a/Globals.h b/Globals.h
index 26599c4..02c0502 100644
--- a/Globals.h
+++ b/Globals.h
@@ -19,7 +19,7 @@
 #if !defined(GLOBALS_H)
 #define  GLOBALS_H
 
-#if defined(STM32F4XX) || defined(STM32F4)
+#if defined(STM32F4XX)
 #include "stm32f4xx.h"
 #elif defined(STM32F7XX)
 #include "stm32f7xx.h"
@@ -34,7 +34,7 @@
 #define  ARM_MATH_CM3
 #elif defined(STM32F7XX)
 #define  ARM_MATH_CM7
-#elif defined(STM32F4XX) || defined(STM32F4) || defined(__MK20DX256__) || defined(__MK64FX512__) || defined(__MK66FX1M0__)
+#elif defined(STM32F4XX) || defined(__MK20DX256__) || defined(__MK64FX512__) || defined(__MK66FX1M0__)
 #define  ARM_MATH_CM4
 #else
 #error "Unknown processor type"
diff --git a/IOSTM.cpp b/IOSTM.cpp
index be6f1ce..3abf820 100644
--- a/IOSTM.cpp
+++ b/IOSTM.cpp
@@ -22,7 +22,7 @@
 #include "Globals.h"
 #include "IO.h"
 
-#if defined(STM32F4XX) || defined(STM32F4) || defined(STM32F7XX)
+#if defined(STM32F4XX) || defined(STM32F7XX)
 
 #if defined(STM32F4_DISCOVERY)
 /*
diff --git a/MMDVM.cpp b/MMDVM.cpp
index cbeeef5..12673e4 100644
--- a/MMDVM.cpp
+++ b/MMDVM.cpp
@@ -18,7 +18,7 @@
  *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
 
-#if defined(STM32F4XX) || defined(STM32F4) || defined(STM32F7XX) || defined(STM32F105xC)
+#if defined(STM32F4XX) || defined(STM32F7XX) || defined(STM32F105xC)
 
 #include "Config.h"
 #include "Globals.h"
diff --git a/RSSIRB.h b/RSSIRB.h
index 6c751bf..0f855a3 100644
--- a/RSSIRB.h
+++ b/RSSIRB.h
@@ -21,7 +21,7 @@ Boston, MA  02110-1301, USA.
 #if !defined(RSSIRB_H)
 #define  RSSIRB_H
 
-#if defined(STM32F4XX) || defined(STM32F4)
+#if defined(STM32F4XX)
 #include "stm32f4xx.h"
 #include <cstddef>
 #elif defined(STM32F7XX)
diff --git a/SampleRB.h b/SampleRB.h
index 35522b3..305bf8b 100644
--- a/SampleRB.h
+++ b/SampleRB.h
@@ -21,7 +21,7 @@ Boston, MA  02110-1301, USA.
 #if !defined(SAMPLERB_H)
 #define  SAMPLERB_H
 
-#if defined(STM32F4XX) || defined(STM32F4)
+#if defined(STM32F4XX)
 #include "stm32f4xx.h"
 #include <cstddef>
 #elif defined(STM32F7XX)
diff --git a/SerialRB.h b/SerialRB.h
index f669cbc..91ebcc1 100644
--- a/SerialRB.h
+++ b/SerialRB.h
@@ -21,7 +21,7 @@ Boston, MA  02110-1301, USA.
 #if !defined(SERIALRB_H)
 #define  SERIALRB_H
 
-#if defined(STM32F4XX) || defined(STM32F4)
+#if defined(STM32F4XX)
 #include "stm32f4xx.h"
 #include <cstddef>
 #elif defined(STM32F7XX)
diff --git a/SerialSTM.cpp b/SerialSTM.cpp
index f813dd7..e0aa6c3 100644
--- a/SerialSTM.cpp
+++ b/SerialSTM.cpp
@@ -37,7 +37,7 @@ UART5  - TXD PC12 - RXD PD2 (Discovery, Pi and Nucleo with Morpho header)
 
 */
 
-#if defined(STM32F4XX) || defined(STM32F4) || defined(STM32F7XX)
+#if defined(STM32F4XX) || defined(STM32F7XX)
 
 #define TX_SERIAL_FIFO_SIZE 512U
 #define RX_SERIAL_FIFO_SIZE 512U
diff --git a/Utils.h b/Utils.h
index 5d8c76e..7656b23 100644
--- a/Utils.h
+++ b/Utils.h
@@ -19,7 +19,7 @@
 #if !defined(UTILS_H)
 #define  UTILS_H
 
-#if defined(STM32F4XX) || defined(STM32F4)
+#if defined(STM32F4XX)
 #include "stm32f4xx.h"
 #include <cstddef>
 #elif defined(STM32F7XX)