diff --git a/library.json b/library.json
index 515ef10..b0e9783 100644
--- a/library.json
+++ b/library.json
@@ -8,7 +8,7 @@
     "type": "git",
     "url": "https://github.com/Makuna/NeoPixelBus"
   },
-  "version": "2.4.2",
+  "version": "2.4.3",
   "frameworks": "arduino",
   "platforms": "*"
 }
diff --git a/library.properties b/library.properties
index 83d27bc..0a4a8f7 100644
--- a/library.properties
+++ b/library.properties
@@ -1,5 +1,5 @@
 name=NeoPixelBus by Makuna
-version=2.4.2
+version=2.4.3
 author=Michael C. Miller (makuna@live.com)
 maintainer=Michael C. Miller (makuna@live.com)
 sentence=A library that makes controlling NeoPixels (WS2811, WS2812, WS2813 & SK6812) and DotStars (APA102) easy.
diff --git a/src/internal/NeoEsp8266DmaMethod.h b/src/internal/NeoEsp8266DmaMethod.h
index 140920e..827c74a 100644
--- a/src/internal/NeoEsp8266DmaMethod.h
+++ b/src/internal/NeoEsp8266DmaMethod.h
@@ -48,7 +48,7 @@ extern "C"
 #include "ets_sys.h"
 #include "user_interface.h"
 
-#if !defined(__CORE_ESP8266_VERSION_H)
+#if !defined(__CORE_ESP8266_VERSION_H) || defined(ARDUINO_ESP8266_RELEASE_2_5_0)
     void rom_i2c_writeReg_Mask(uint32_t block, uint32_t host_id, uint32_t reg_add, uint32_t Msb, uint32_t Lsb, uint32_t indata);
 #endif
 }