diff --git a/builder/builder_test.go b/builder/builder_test.go
index 0ed632da..3bb3e984 100644
--- a/builder/builder_test.go
+++ b/builder/builder_test.go
@@ -33,7 +33,7 @@ func TestClangAttributes(t *testing.T) {
 		"k210",
 		"nintendoswitch",
 		"riscv-qemu",
-		"wasi",
+		"wasip1",
 		"wasm",
 		"wasm-unknown",
 	}
diff --git a/corpus_test.go b/corpus_test.go
index 1b27d6f6..f17a9b9f 100644
--- a/corpus_test.go
+++ b/corpus_test.go
@@ -51,6 +51,7 @@ func TestCorpus(t *testing.T) {
 	if *testTarget != "" {
 		target = *testTarget
 	}
+	isWASI := strings.HasPrefix(target, "wasi")
 
 	repos, err := loadRepos(*corpus)
 	if err != nil {
@@ -69,7 +70,7 @@ func TestCorpus(t *testing.T) {
 		t.Run(name, func(t *testing.T) {
 			t.Parallel()
 
-			if target == "wasi" && repo.SkipWASI {
+			if isWASI && repo.SkipWASI {
 				t.Skip("skip wasi")
 			}
 			if repo.Slow && testing.Short() {
@@ -135,7 +136,7 @@ func TestCorpus(t *testing.T) {
 				t.Run(dir.Pkg, func(t *testing.T) {
 					t.Parallel()
 
-					if target == "wasi" && dir.SkipWASI {
+					if isWASI && dir.SkipWASI {
 						t.Skip("skip wasi")
 					}
 					if dir.Slow && testing.Short() {
diff --git a/main_test.go b/main_test.go
index 9c28eb86..0f0d52f4 100644
--- a/main_test.go
+++ b/main_test.go
@@ -179,7 +179,7 @@ func TestBuild(t *testing.T) {
 		})
 		t.Run("WASI", func(t *testing.T) {
 			t.Parallel()
-			runPlatTests(optionsFromTarget("wasi", sema), tests, t)
+			runPlatTests(optionsFromTarget("wasip1", sema), tests, t)
 		})
 	}
 }
@@ -192,7 +192,10 @@ func runPlatTests(options compileopts.Options, tests []string, t *testing.T) {
 		t.Fatal("failed to load target spec:", err)
 	}
 
-	isWebAssembly := options.Target == "wasi" || options.Target == "wasm" || (options.Target == "" && options.GOARCH == "wasm")
+	// FIXME: this should really be:
+	// isWebAssembly := strings.HasPrefix(spec.Triple, "wasm")
+	isWASI := strings.HasPrefix(options.Target, "wasi")
+	isWebAssembly := isWASI || strings.HasPrefix(options.Target, "wasm") || (options.Target == "" && strings.HasPrefix(options.GOARCH, "wasm"))
 
 	for _, name := range tests {
 		if options.GOOS == "linux" && (options.GOARCH == "arm" || options.GOARCH == "386") {
@@ -252,13 +255,13 @@ func runPlatTests(options compileopts.Options, tests []string, t *testing.T) {
 			runTest("alias.go", options, t, nil, nil)
 		})
 	}
-	if options.Target == "" || options.Target == "wasi" {
+	if options.Target == "" || isWASI {
 		t.Run("filesystem.go", func(t *testing.T) {
 			t.Parallel()
 			runTest("filesystem.go", options, t, nil, nil)
 		})
 	}
-	if options.Target == "" || options.Target == "wasi" || options.Target == "wasm" {
+	if options.Target == "" || options.Target == "wasm" || isWASI {
 		t.Run("rand.go", func(t *testing.T) {
 			t.Parallel()
 			runTest("rand.go", options, t, nil, nil)
@@ -492,7 +495,7 @@ func TestTest(t *testing.T) {
 
 			// Node/Wasmtime
 			targ{"WASM", optionsFromTarget("wasm", sema)},
-			targ{"WASI", optionsFromTarget("wasi", sema)},
+			targ{"WASI", optionsFromTarget("wasip1", sema)},
 		)
 	}
 	for _, targ := range targs {