diff --git a/misc/nacl/testzip.proto b/misc/nacl/testzip.proto
index f15a2ab224..1e9279e4e0 100644
--- a/misc/nacl/testzip.proto
+++ b/misc/nacl/testzip.proto
@@ -177,6 +177,8 @@ go	src=..
 		strconv
 			testdata
 				+
+		testdata
+			+
 		text
 			template
 				testdata
diff --git a/src/compress/flate/deflate_test.go b/src/compress/flate/deflate_test.go
index 46d917c01e..831be2198c 100644
--- a/src/compress/flate/deflate_test.go
+++ b/src/compress/flate/deflate_test.go
@@ -371,7 +371,7 @@ var deflateInflateStringTests = []deflateInflateStringTest{
 		[...]int{100018, 50650, 50960, 51150, 50930, 50790, 50790, 50790, 50790, 50790, 43683},
 	},
 	{
-		"../testdata/Isaac.Newton-Opticks.txt",
+		"../../testdata/Isaac.Newton-Opticks.txt",
 		"Isaac.Newton-Opticks",
 		[...]int{567248, 218338, 198211, 193152, 181100, 175427, 175427, 173597, 173422, 173422, 325240},
 	},
@@ -654,7 +654,7 @@ func (w *failWriter) Write(b []byte) (int, error) {
 
 func TestWriterPersistentError(t *testing.T) {
 	t.Parallel()
-	d, err := ioutil.ReadFile("../testdata/Isaac.Newton-Opticks.txt")
+	d, err := ioutil.ReadFile("../../testdata/Isaac.Newton-Opticks.txt")
 	if err != nil {
 		t.Fatalf("ReadFile: %v", err)
 	}
diff --git a/src/compress/flate/reader_test.go b/src/compress/flate/reader_test.go
index e1c3dff11b..9d2943a540 100644
--- a/src/compress/flate/reader_test.go
+++ b/src/compress/flate/reader_test.go
@@ -28,7 +28,7 @@ var suites = []struct{ name, file string }{
 	// reasonably compressible.
 	{"Digits", "../testdata/e.txt"},
 	// Newton is Isaac Newtons's educational text on Opticks.
-	{"Newton", "../testdata/Isaac.Newton-Opticks.txt"},
+	{"Newton", "../../testdata/Isaac.Newton-Opticks.txt"},
 }
 
 func BenchmarkDecode(b *testing.B) {
diff --git a/src/net/sendfile_test.go b/src/net/sendfile_test.go
index 7077cc36e8..f133744a66 100644
--- a/src/net/sendfile_test.go
+++ b/src/net/sendfile_test.go
@@ -17,7 +17,7 @@ import (
 )
 
 const (
-	newton       = "../compress/testdata/Isaac.Newton-Opticks.txt"
+	newton       = "../testdata/Isaac.Newton-Opticks.txt"
 	newtonLen    = 567198
 	newtonSHA256 = "d4a9ac22462b35e7821a4f2706c211093da678620a8f9997989ee7cf8d507bbd"
 )
diff --git a/src/compress/testdata/Isaac.Newton-Opticks.txt b/src/testdata/Isaac.Newton-Opticks.txt
similarity index 100%
rename from src/compress/testdata/Isaac.Newton-Opticks.txt
rename to src/testdata/Isaac.Newton-Opticks.txt