diff --git a/TFT_eSPI.cpp b/TFT_eSPI.cpp
index 064cf30..0bacb05 100644
--- a/TFT_eSPI.cpp
+++ b/TFT_eSPI.cpp
@@ -4973,8 +4973,8 @@ uint16_t TFT_eSPI::decodeUTF8(uint8_t *buf, uint16_t *index, uint16_t remaining)
 ** Function name:           alphaBlend
 ** Description:             Blend 16bit foreground and background
 *************************************************************************************x*/
-#ifndef STM32
-inline 
+#if !defined (STM32) && !defined(__IMXRT1052__) && !defined(__IMXRT1062__)
+  inline 
 #endif
 uint16_t TFT_eSPI::alphaBlend(uint8_t alpha, uint16_t fgc, uint16_t bgc)
 {
diff --git a/TFT_eSPI.h b/TFT_eSPI.h
index 6cc431d..508468c 100644
--- a/TFT_eSPI.h
+++ b/TFT_eSPI.h
@@ -732,12 +732,11 @@ class TFT_eSPI : public Print { friend class TFT_eSprite; // Sprite class has ac
            // Alpha blend 2 colours, see generic "alphaBlend_Test" example
            // alpha =   0 = 100% background colour
            // alpha = 255 = 100% foreground colour
-#ifdef STM32
-  uint16_t alphaBlend(uint8_t alpha, uint16_t fgc, uint16_t bgc);
-#else
-  inline
-  uint16_t alphaBlend(uint8_t alpha, uint16_t fgc, uint16_t bgc);
+#if !defined (STM32) && !defined(__IMXRT1052__) && !defined(__IMXRT1062__)
+  inline 
 #endif
+  uint16_t alphaBlend(uint8_t alpha, uint16_t fgc, uint16_t bgc);
+
            // 16 bit colour alphaBlend with alpha dither (dither reduces colour banding)
   uint16_t alphaBlend(uint8_t alpha, uint16_t fgc, uint16_t bgc, uint8_t dither);
            // 24 bit colour alphaBlend with optional alpha dither