diff --git a/firmware/export/screendump.h b/firmware/export/screendump.h
index 9be1f5d3f2..b7acdd344c 100644
--- a/firmware/export/screendump.h
+++ b/firmware/export/screendump.h
@@ -39,20 +39,29 @@
 #define LE16_CONST(x) (x)&0xff, ((x)>>8)&0xff
 #define LE32_CONST(x) (x)&0xff, ((x)>>8)&0xff, ((x)>>16)&0xff, ((x)>>24)&0xff
 
+#ifndef BMP_BPP
 #if LCD_DEPTH <= 4
 #define BMP_BPP 4
-#define BMP_LINESIZE ((LCD_WIDTH/2 + 3) & ~3)
 #elif LCD_DEPTH <= 8
 #define BMP_BPP 8
-#define BMP_LINESIZE ((LCD_WIDTH + 3) & ~3)
 #elif LCD_DEPTH <= 16
 #define BMP_BPP 16
-#define BMP_LINESIZE ((LCD_WIDTH*2 + 3) & ~3)
 #else
 #define BMP_BPP 24
-#define BMP_LINESIZE ((LCD_WIDTH*3 + 3) & ~3)
+#endif
 #endif
 
+#ifndef BMP_LINESIZE
+#if LCD_DEPTH <= 4
+#define BMP_LINESIZE ((LCD_WIDTH/2 + 3) & ~3)
+#elif LCD_DEPTH <= 8
+#define BMP_LINESIZE ((LCD_WIDTH + 3) & ~3)
+#elif LCD_DEPTH <= 16
+#define BMP_LINESIZE ((LCD_WIDTH*2 + 3) & ~3)
+#else
+#define BMP_LINESIZE ((LCD_WIDTH*3 + 3) & ~3)
+#endif
+#endif
 
 #ifdef BOOTLOADER