diff --git a/src/internal/NeoEspBitBangMethod.h b/src/internal/NeoEspBitBangMethod.h
index 96a8a3f..6f5a8a8 100644
--- a/src/internal/NeoEspBitBangMethod.h
+++ b/src/internal/NeoEspBitBangMethod.h
@@ -28,9 +28,9 @@ License along with NeoPixel.  If not, see
 
 #if defined(ARDUINO_ARCH_ESP8266) || defined(ARDUINO_ARCH_ESP32)
 
-// ESP32 doesn't use ICACHE_RAM_ATTR
+// ESP32 doesn't define ICACHE_RAM_ATTR
 #ifndef ICACHE_RAM_ATTR
-#define ICACHE_RAM_ATTR 
+#define ICACHE_RAM_ATTR IRAM_ATTR
 #endif
 
 // for esp8266, due to linker overriding the ICACHE_RAM_ATTR for cpp files, these methods are
diff --git a/src/internal/NeoPixelEsp.c b/src/internal/NeoPixelEsp.c
index 2296e36..52415ff 100644
--- a/src/internal/NeoPixelEsp.c
+++ b/src/internal/NeoPixelEsp.c
@@ -31,9 +31,9 @@ License along with NeoPixel.  If not, see
 #include <eagle_soc.h>
 #endif
 
-// ESP32 doesn't use ICACHE_RAM_ATTR
+// ESP32 doesn't define ICACHE_RAM_ATTR
 #ifndef ICACHE_RAM_ATTR
-#define ICACHE_RAM_ATTR 
+#define ICACHE_RAM_ATTR IRAM_ATTR
 #endif
 
 inline uint32_t _getCycleCount()