diff --git a/libswscale/x86/output.asm b/libswscale/x86/output.asm
index 7f82665e1b080..52cf9f2c2ebd7 100644
--- a/libswscale/x86/output.asm
+++ b/libswscale/x86/output.asm
@@ -543,7 +543,9 @@ nv12_inner_%1:
     RET
 %endmacro
 
+%if HAVE_AVX2_EXTERNAL
 INIT_YMM avx2
 yuv2nv12cX_fn yuv2nv12
 yuv2nv12cX_fn yuv2nv21
+%endif
 %endif ; ARCH_X86_64