diff --git a/src/draw/sw/blend/lv_draw_sw_blend_to_argb8888.c b/src/draw/sw/blend/lv_draw_sw_blend_to_argb8888.c
index 2e1bc5b1be..fd3fd1ea9f 100644
--- a/src/draw/sw/blend/lv_draw_sw_blend_to_argb8888.c
+++ b/src/draw/sw/blend/lv_draw_sw_blend_to_argb8888.c
@@ -91,7 +91,9 @@ static inline void /* LV_ATTRIBUTE_FAST_MEM */ blend_non_normal_pixel(lv_color32
 
 static inline void * /* LV_ATTRIBUTE_FAST_MEM */ drawbuf_next_row(const void * buf, uint32_t stride);
 
-static inline lv_color16_t /* LV_ATTRIBUTE_FAST_MEM */ lv_color16_from_u16(uint16_t raw);
+#if LV_DRAW_SW_SUPPORT_RGB565_SWAPPED
+    static inline lv_color16_t /* LV_ATTRIBUTE_FAST_MEM */ lv_color16_from_u16(uint16_t raw);
+#endif
 
 /**********************
  *  STATIC VARIABLES
@@ -1350,6 +1352,7 @@ static inline void * LV_ATTRIBUTE_FAST_MEM drawbuf_next_row(const void * buf, ui
     return (void *)((uint8_t *)buf + stride);
 }
 
+#if LV_DRAW_SW_SUPPORT_RGB565_SWAPPED
 static inline lv_color16_t LV_ATTRIBUTE_FAST_MEM lv_color16_from_u16(uint16_t raw)
 {
     lv_color16_t c;
@@ -1358,6 +1361,7 @@ static inline lv_color16_t LV_ATTRIBUTE_FAST_MEM lv_color16_from_u16(uint16_t ra
     c.blue = raw & 0x1F;
     return c;
 }
+#endif
 
 #endif /* LV_DRAW_SW_SUPPORT_ARGB8888 */
 
diff --git a/src/draw/sw/blend/lv_draw_sw_blend_to_i1.c b/src/draw/sw/blend/lv_draw_sw_blend_to_i1.c
index eaeccfab7b..7fe446cab3 100644
--- a/src/draw/sw/blend/lv_draw_sw_blend_to_i1.c
+++ b/src/draw/sw/blend/lv_draw_sw_blend_to_i1.c
@@ -78,7 +78,9 @@ static inline uint8_t /* LV_ATTRIBUTE_FAST_MEM */ get_bit(const uint8_t * buf, i
 
 static inline void * /* LV_ATTRIBUTE_FAST_MEM */ drawbuf_next_row(const void * buf, uint32_t stride);
 
-static inline lv_color16_t /* LV_ATTRIBUTE_FAST_MEM */ lv_color16_from_u16(uint16_t raw);
+#if LV_DRAW_SW_SUPPORT_RGB565_SWAPPED
+    static inline lv_color16_t /* LV_ATTRIBUTE_FAST_MEM */ lv_color16_from_u16(uint16_t raw);
+#endif
 
 /**********************
  *  STATIC VARIABLES
@@ -1271,6 +1273,7 @@ static inline uint8_t LV_ATTRIBUTE_FAST_MEM get_bit(const uint8_t * buf, int32_t
     return (buf[bit_idx / 8] >> (7 - (bit_idx % 8))) & 1;
 }
 
+#if LV_DRAW_SW_SUPPORT_RGB565_SWAPPED
 static inline lv_color16_t LV_ATTRIBUTE_FAST_MEM lv_color16_from_u16(uint16_t raw)
 {
     lv_color16_t c;
@@ -1279,5 +1282,6 @@ static inline lv_color16_t LV_ATTRIBUTE_FAST_MEM lv_color16_from_u16(uint16_t ra
     c.blue = raw & 0x1F;
     return c;
 }
+#endif
 
 #endif
diff --git a/src/draw/sw/blend/lv_draw_sw_blend_to_l8.c b/src/draw/sw/blend/lv_draw_sw_blend_to_l8.c
index 91bb1162a0..63fea770b7 100644
--- a/src/draw/sw/blend/lv_draw_sw_blend_to_l8.c
+++ b/src/draw/sw/blend/lv_draw_sw_blend_to_l8.c
@@ -74,7 +74,9 @@ static inline void /* LV_ATTRIBUTE_FAST_MEM */ blend_non_normal_pixel(uint8_t *
 
 static inline void * /* LV_ATTRIBUTE_FAST_MEM */ drawbuf_next_row(const void * buf, uint32_t stride);
 
-static inline lv_color16_t /* LV_ATTRIBUTE_FAST_MEM */ lv_color16_from_u16(uint16_t raw);
+#if LV_DRAW_SW_SUPPORT_RGB565_SWAPPED
+    static inline lv_color16_t /* LV_ATTRIBUTE_FAST_MEM */ lv_color16_from_u16(uint16_t raw);
+#endif
 
 /**********************
  *  STATIC VARIABLES
@@ -1005,6 +1007,7 @@ static inline void * LV_ATTRIBUTE_FAST_MEM drawbuf_next_row(const void * buf, ui
     return (void *)((uint8_t *)buf + stride);
 }
 
+#if LV_DRAW_SW_SUPPORT_RGB565_SWAPPED
 static inline lv_color16_t LV_ATTRIBUTE_FAST_MEM lv_color16_from_u16(uint16_t raw)
 {
     lv_color16_t c;
@@ -1013,6 +1016,7 @@ static inline lv_color16_t LV_ATTRIBUTE_FAST_MEM lv_color16_from_u16(uint16_t ra
     c.blue = raw & 0x1F;
     return c;
 }
+#endif
 
 #endif
 
diff --git a/src/draw/sw/blend/lv_draw_sw_blend_to_rgb565.c b/src/draw/sw/blend/lv_draw_sw_blend_to_rgb565.c
index bca595caab..361553a32b 100644
--- a/src/draw/sw/blend/lv_draw_sw_blend_to_rgb565.c
+++ b/src/draw/sw/blend/lv_draw_sw_blend_to_rgb565.c
@@ -79,7 +79,9 @@ static inline uint16_t /* LV_ATTRIBUTE_FAST_MEM */ lv_color_24_16_mix(const uint
 
 static inline void * /* LV_ATTRIBUTE_FAST_MEM */ drawbuf_next_row(const void * buf, uint32_t stride);
 
-static inline lv_color16_t /* LV_ATTRIBUTE_FAST_MEM */ lv_color16_from_u16(uint16_t raw);
+#if LV_DRAW_SW_SUPPORT_RGB565_SWAPPED
+    static inline lv_color16_t /* LV_ATTRIBUTE_FAST_MEM */ lv_color16_from_u16(uint16_t raw);
+#endif
 
 /**********************
  *  STATIC VARIABLES
@@ -1497,6 +1499,7 @@ static inline void * LV_ATTRIBUTE_FAST_MEM drawbuf_next_row(const void * buf, ui
     return (void *)((uint8_t *)buf + stride);
 }
 
+#if LV_DRAW_SW_SUPPORT_RGB565_SWAPPED
 static inline lv_color16_t LV_ATTRIBUTE_FAST_MEM lv_color16_from_u16(uint16_t raw)
 {
     lv_color16_t c;
@@ -1505,6 +1508,7 @@ static inline lv_color16_t LV_ATTRIBUTE_FAST_MEM lv_color16_from_u16(uint16_t ra
     c.blue = raw & 0x1F;
     return c;
 }
+#endif
 
 #endif /*LV_DRAW_SW_SUPPORT_RGB565*/