diff --git a/programs/develop/libraries/libs-dev/libimg/libimg.asm b/programs/develop/libraries/libs-dev/libimg/libimg.asm
index 35576548b..a47bbe1dd 100644
--- a/programs/develop/libraries/libs-dev/libimg/libimg.asm
+++ b/programs/develop/libraries/libs-dev/libimg/libimg.asm
@@ -1101,6 +1101,8 @@ endl
 
         test    [_flip_kind], FLIP_HORIZONTAL
         jz      .exit
+        cmp     dword [ebx + Image.Width], 2
+        jl      .exit
 
         mov     ecx, [ebx + Image.Height]
         mov     eax, [ebx + Image.Type]