diff --git a/cranelift/filetests/filetests/runtests/simd-swidenhigh.clif b/cranelift/filetests/filetests/runtests/simd-swidenhigh.clif
index 47d4229c61..6242859e8d 100644
--- a/cranelift/filetests/filetests/runtests/simd-swidenhigh.clif
+++ b/cranelift/filetests/filetests/runtests/simd-swidenhigh.clif
@@ -2,7 +2,7 @@ test interpret
 test run
 target aarch64
 set enable_simd
-target x86_64
+target x86_64 machinst
 
 function %swidenhigh_i8x16(i8x16) -> i16x8 {
 block0(v0: i8x16):
diff --git a/cranelift/filetests/filetests/runtests/simd-swidenlow.clif b/cranelift/filetests/filetests/runtests/simd-swidenlow.clif
index 997734702b..38f100ef29 100644
--- a/cranelift/filetests/filetests/runtests/simd-swidenlow.clif
+++ b/cranelift/filetests/filetests/runtests/simd-swidenlow.clif
@@ -2,7 +2,7 @@ test interpret
 test run
 target aarch64
 set enable_simd
-target x86_64
+target x86_64 machinst
 
 function %swidenlow_i8x16(i8x16) -> i16x8 {
 block0(v0: i8x16):