diff --git a/programs/fs/kfm/trunk/data.inc b/programs/fs/kfm/trunk/data.inc
index 0e58ca27ac..76e9b50856 100644
--- a/programs/fs/kfm/trunk/data.inc
+++ b/programs/fs/kfm/trunk/data.inc
@@ -202,9 +202,13 @@ align 4
 delete_dir_data:
 	rb 32
 ;---------------------------------------------------------------------
+align 4
+extension_temp_storage:
+	rb 256
+;---------------------------------------------------------------------
 ;stack
 align 4
-	rb 512
+	rb 4096
 stacktop:
 ;---------------------------------------------------------------------
 align 4
diff --git a/programs/fs/kfm/trunk/files.inc b/programs/fs/kfm/trunk/files.inc
index ba69349982..b91c611d89 100644
--- a/programs/fs/kfm/trunk/files.inc
+++ b/programs/fs/kfm/trunk/files.inc
@@ -97,7 +97,7 @@ proc_read_left_folder:
     jne   .error
 @@:
    push  eax
-   call  left_files_name_normalize
+;   call  left_files_name_normalize
    call  left_prepare_extension_start
    call  left_sort_files
    pop   eax
@@ -201,7 +201,7 @@ proc_read_right_folder:
     jne   .error
 @@:
    push  eax
-   call  right_files_name_normalize
+;   call  right_files_name_normalize
    call  right_prepare_extension_start
    call  right_sort_files
    pop   eax
diff --git a/programs/fs/kfm/trunk/sort.inc b/programs/fs/kfm/trunk/sort.inc
index 2cd27da520..a71a136899 100644
--- a/programs/fs/kfm/trunk/sort.inc
+++ b/programs/fs/kfm/trunk/sort.inc
@@ -254,55 +254,55 @@ left_prepare_extension_start_1:
    jb	 .start
    ret
 ;---------------------------------------------------------------------
-left_files_name_normalize:
-   xor	 ebp,ebp
-   mov	 esi,[left_folder_data]
-   add	 esi,32+40
-.start:
-   push  esi
-   mov	 al,[esi]
-   call  char_toupper
-   mov	 [esi],al
-@@:
-   inc	 esi
-   mov	 al,[esi]
-   test  al,al
-   jz	@f
-   call  char_todown
-   mov	 [esi],al
-   jmp	 @b
-@@:
-   pop	 esi
-   add	 esi,304
-   inc	 ebp
-   cmp	 ebp,[left_folder_block]
-   jb	 .start
-   ret
+;left_files_name_normalize:
+;   xor	 ebp,ebp
+;   mov	 esi,[left_folder_data]
+;   add	 esi,32+40
+;.start:
+;   push  esi
+;   mov	 al,[esi]
+;   call  char_toupper
+;   mov	 [esi],al
+;@@:
+;   inc	 esi
+;   mov	 al,[esi]
+;   test  al,al
+;   jz	@f
+;   call  char_todown
+;   mov	 [esi],al
+;   jmp	 @b
+;@@:
+;   pop	 esi
+;   add	 esi,304
+;   inc	 ebp
+;   cmp	 ebp,[left_folder_block]
+;   jb	 .start
+;   ret
 ;---------------------------------------------------------------------
-right_files_name_normalize:
-   xor	 ebp,ebp
-   mov	 esi,[right_folder_data]
-   add	 esi,32+40
-.start:
-   push  esi
-   mov	 al,[esi]
-   call  char_toupper
-   mov	 [esi],al
-@@:
-   inc	 esi
-   mov	 al,[esi]
-   test  al,al
-   jz	@f
-   call  char_todown
-   mov	 [esi],al
-   jmp	 @b
-@@:
-   pop	 esi
-   add	 esi,304
-   inc	 ebp
-   cmp	 ebp,[right_folder_block]
-   jb	 .start
-   ret
+;right_files_name_normalize:
+;   xor	 ebp,ebp
+;   mov	 esi,[right_folder_data]
+;   add	 esi,32+40
+;.start:
+;   push  esi
+;   mov	 al,[esi]
+;   call  char_toupper
+;   mov	 [esi],al
+;@@:
+;   inc	 esi
+;   mov	 al,[esi]
+;   test  al,al
+;   jz	@f
+;   call  char_todown
+;   mov	 [esi],al
+;   jmp	 @b
+;@@:
+;   pop	 esi
+;   add	 esi,304
+;   inc	 ebp
+;   cmp	 ebp,[right_folder_block]
+;   jb	 .start
+;   ret
 ;---------------------------------------------------------------------
 right_prepare_extension_start:
    xor	 ebp,ebp
diff --git a/programs/fs/kfm/trunk/tran_ini.inc b/programs/fs/kfm/trunk/tran_ini.inc
index 2c9d1b1b14..9a7870c524 100644
--- a/programs/fs/kfm/trunk/tran_ini.inc
+++ b/programs/fs/kfm/trunk/tran_ini.inc
@@ -1,13 +1,16 @@
 ;---------------------------------------------------------------------
 get_icon_number:
     mov   ebp,[extension_size]	;[icons_end_tag]
+    test  ebp,ebp
+    jz    .end
+    call  normalize_extension_of_file
     mov   edx,[icons_end_tag]
     mov   edi,[ini_file_start]
     dec   edi
 .search_association:
     cmp   edx,edi
     jbe   .end
-    mov   esi,[extension_start]
+    mov   esi,extension_temp_storage
     mov   ecx,ebp
     test  ecx,ecx
     je	  @f
@@ -51,6 +54,20 @@ get_icon_number:
     sub   eax,0x30
     ret
 ;---------------------------------------------------------------------
+normalize_extension_of_file:
+    push  edi
+    mov   esi,[extension_start]
+    mov   edi,extension_temp_storage
+    cld
+@@:
+    lodsb
+    call  char_todown
+    stosb
+    test  al,al
+    jnz   @b
+    pop   edi
+    ret
+;---------------------------------------------------------------------
 open_file_with_appl_1:
     mov   ebp,files_associations_1
     jmp   open_file_with_appl.1
@@ -64,10 +81,11 @@ open_file_with_appl:
     call  search_star_and_end_tags
     cmp   ebp,-1
     je	  .end
+    call  normalize_extension_of_file
 .search_association:
     cmp   [end_tag],edi
     jbe   .end
-    mov   esi,[extension_start] ;extension_temp_area
+    mov   esi,extension_temp_storage
     mov   ecx,[extension_size]
     inc   edi
     cld