diff --git a/builder/dockerfile/internals.go b/builder/dockerfile/internals.go
index 54d3301f9a..c7f61cd3ec 100644
--- a/builder/dockerfile/internals.go
+++ b/builder/dockerfile/internals.go
@@ -375,18 +375,6 @@ func (b *Builder) calcCopyInfo(cmdName, origPath string, allowLocalDecompression
 	return copyInfos, nil
 }
 
-func containsWildcards(name string) bool {
-	for i := 0; i < len(name); i++ {
-		ch := name[i]
-		if ch == '\\' {
-			i++
-		} else if ch == '*' || ch == '?' || ch == '[' {
-			return true
-		}
-	}
-	return false
-}
-
 func (b *Builder) processImageFrom(img builder.Image) error {
 	if img != nil {
 		b.image = img.ImageID()
diff --git a/builder/dockerfile/internals_unix.go b/builder/dockerfile/internals_unix.go
index 6cd990d892..a8a47c3582 100644
--- a/builder/dockerfile/internals_unix.go
+++ b/builder/dockerfile/internals_unix.go
@@ -24,3 +24,15 @@ func normaliseDest(cmdName, workingDir, requested string) (string, error) {
 	}
 	return dest, nil
 }
+
+func containsWildcards(name string) bool {
+	for i := 0; i < len(name); i++ {
+		ch := name[i]
+		if ch == '\\' {
+			i++
+		} else if ch == '*' || ch == '?' || ch == '[' {
+			return true
+		}
+	}
+	return false
+}
diff --git a/builder/dockerfile/internals_windows.go b/builder/dockerfile/internals_windows.go
index f70360300d..f60b112049 100644
--- a/builder/dockerfile/internals_windows.go
+++ b/builder/dockerfile/internals_windows.go
@@ -54,3 +54,13 @@ func normaliseDest(cmdName, workingDir, requested string) (string, error) {
 	}
 	return dest, nil
 }
+
+func containsWildcards(name string) bool {
+	for i := 0; i < len(name); i++ {
+		ch := name[i]
+		if ch == '*' || ch == '?' || ch == '[' {
+			return true
+		}
+	}
+	return false
+}
diff --git a/integration-cli/docker_cli_build_test.go b/integration-cli/docker_cli_build_test.go
index ba8d7672ce..e56eb40768 100644
--- a/integration-cli/docker_cli_build_test.go
+++ b/integration-cli/docker_cli_build_test.go
@@ -868,7 +868,6 @@ RUN find "test6" "C:/test dir/test_file6"`
 }
 
 func (s *DockerSuite) TestBuildCopyWildcard(c *check.C) {
-	testRequires(c, DaemonIsLinux) // Windows doesn't have httpserver image yet
 	name := "testcopywildcard"
 	server, err := fakeStorage(map[string]string{
 		"robots.txt": "hello",
@@ -882,10 +881,10 @@ func (s *DockerSuite) TestBuildCopyWildcard(c *check.C) {
 	ctx, err := fakeContext(fmt.Sprintf(`FROM busybox
 	COPY file*.txt /tmp/
 	RUN ls /tmp/file1.txt /tmp/file2.txt
-	RUN mkdir /tmp1
+	RUN [ "mkdir",  "/tmp1" ]
 	COPY dir* /tmp1/
 	RUN ls /tmp1/dirt /tmp1/nested_file /tmp1/nested_dir/nest_nest_file
-	RUN mkdir /tmp2
+	RUN [ "mkdir",  "/tmp2" ]
         ADD dir/*dir %s/robots.txt /tmp2/
 	RUN ls /tmp2/nest_nest_file /tmp2/robots.txt
 	`, server.URL()),