diff --git a/programs/develop/libraries/libs-dev/libimg/bmp/bmp.asm b/programs/develop/libraries/libs-dev/libimg/bmp/bmp.asm
index 5d55801ae9..09a896f39d 100644
--- a/programs/develop/libraries/libs-dev/libimg/bmp/bmp.asm
+++ b/programs/develop/libraries/libs-dev/libimg/bmp/bmp.asm
@@ -92,11 +92,13 @@ img.decode.bmp.length_rest equ length_rest
 
 	mov	[bTopDown], 0
 
-	cmp	eax, 12
+	cmp	eax, 12		; 0x0C
 	jz	.old1
-	cmp	eax, 40
+	cmp	eax, 40		; 0x28
 	jz	.normal
-	cmp	eax, 56
+	cmp	eax, 56		; 0x38
+	je	.normal
+	cmp	eax, 108	; 0x6C
 	jnz	.error
 ; convert images with <= 8 bpp to 8bpp, other - to 32 bpp
 .normal:
diff --git a/programs/develop/libraries/libs-dev/libimg/libimg.asm b/programs/develop/libraries/libs-dev/libimg/libimg.asm
index e8daa8e686..6cb699f94c 100644
--- a/programs/develop/libraries/libs-dev/libimg/libimg.asm
+++ b/programs/develop/libraries/libs-dev/libimg/libimg.asm
@@ -884,13 +884,17 @@ endl
     mov ecx, [scanline_len]
     push    ecx
     shr ecx, 2
-    @@: mov eax, [esi]
+    @@:
+    dec ecx
+    js  @f
+    mov eax, [esi]
     xchg    eax, [edi]
     mov [esi], eax
     add esi, 4
     add edi, 4
-    sub ecx, 1
-    jnz @b
+    jmp @b
+    @@:
+
     pop ecx
     and ecx, 3
     jz  .cont_line_vert
diff --git a/programs/develop/libraries/libs-dev/libimg/pcx/pcx.asm b/programs/develop/libraries/libs-dev/libimg/pcx/pcx.asm
index 4f42fcedad..32faf57e91 100644
--- a/programs/develop/libraries/libs-dev/libimg/pcx/pcx.asm
+++ b/programs/develop/libraries/libs-dev/libimg/pcx/pcx.asm
@@ -18,7 +18,6 @@
 ;;================================================================================================;;
 
 include	'pcx.inc'
-;include '../../../../system/board/trunk/debug.inc'
 
 ;;================================================================================================;;
 proc img.is.pcx _data, _length ;//////////////////////////////////////////////////////////////////;;
@@ -238,14 +237,16 @@ endp
 
 
 ;;================================================================================================;;
-proc img.encode.pcx _img, _p_length, _options ;///////////////////////////////////////////////////;;
+proc img.encode.pcx _img, _common, _specific ;////////////////////////////////////////////////////;;
 ;;------------------------------------------------------------------------------------------------;;
-;? Encode image into raw data in pcx format                                                     ;;
+;? Encode image into raw data in pcx format                                                       ;;
 ;;------------------------------------------------------------------------------------------------;;
-;> _img = pointer to image                                                                        ;;
+;> [_img]      = pointer to image                                                                 ;;
+;> [_common]   = format independent options                                                       ;;
+;> [_specific] = 0 / pointer to the structure of format specific options                          ;;
 ;;------------------------------------------------------------------------------------------------;;
-;< eax = 0 (error) or pointer to encoded data                                                     ;;
-;< _p_length = encoded data length                                                                ;;
+;< eax = 0 / pointer to encoded data                                                              ;;
+;< ecx = error code / the size of encoded data                                                    ;;
 ;;================================================================================================;;
 	xor	eax, eax
 	ret