diff --git a/programs/develop/libraries/libs-dev/libimg/tga/tga.asm b/programs/develop/libraries/libs-dev/libimg/tga/tga.asm
index c51dfd777..c1ad9d0b5 100644
--- a/programs/develop/libraries/libs-dev/libimg/tga/tga.asm
+++ b/programs/develop/libraries/libs-dev/libimg/tga/tga.asm
@@ -34,10 +34,10 @@ proc img.is.tga _data, _length ;////////////////////////////////////////////////
 ;;------------------------------------------------------------------------------------------------;;
 ;< eax = false / true                                                                             ;;
 ;;================================================================================================;;
+	push ebx
 	cmp	[_length], 18
 	jbe	.nope
 	mov	eax, [_data]
-	push ebx
 	mov	ebx,[eax+1] ;bl=cmatype,bh=subtype
 	cmp	bl,1		;cmatype is in [0..1]
 	ja	.nope