diff --git a/radio/src/targets/horus/board.cpp b/radio/src/targets/horus/board.cpp
index fe4fbe7d846..15fbb96a855 100644
--- a/radio/src/targets/horus/board.cpp
+++ b/radio/src/targets/horus/board.cpp
@@ -123,6 +123,10 @@ void boardInit()
   }
 #endif
 
+#if defined(RADIO_TX16S)
+  FLASH_PrefetchBufferCmd(DISABLE);
+#endif
+
   pwrInit();
   boardInitModulePorts();
 
diff --git a/radio/src/targets/taranis/board.cpp b/radio/src/targets/taranis/board.cpp
index 30ff630a886..1d081a66e68 100644
--- a/radio/src/targets/taranis/board.cpp
+++ b/radio/src/targets/taranis/board.cpp
@@ -138,6 +138,7 @@ void boardInit()
     FLASH_OB_Launch();
     FLASH_OB_Lock();
   }
+  FLASH_PrefetchBufferCmd(DISABLE);
 #endif
 
   // Sets 'hardwareOption.pcbrev' as well