diff --git a/libc-test/build.rs b/libc-test/build.rs
index ac31778935f2e..64edc1e2a5a53 100755
--- a/libc-test/build.rs
+++ b/libc-test/build.rs
@@ -559,7 +559,6 @@ fn test_redox(target: &str) {
         "errno.h",
         "fcntl.h",
         "grp.h",
-        "iconv.h",
         "limits.h",
         "locale.h",
         "netdb.h",
@@ -620,7 +619,6 @@ fn test_solarish(target: &str) {
         "fcntl.h",
         "glob.h",
         "grp.h",
-        "iconv.h",
         "ifaddrs.h",
         "langinfo.h",
         "limits.h",
@@ -1334,7 +1332,6 @@ fn test_android(target: &str) {
                "errno.h",
                "fcntl.h",
                "grp.h",
-               "iconv.h",
                "ifaddrs.h",
                "limits.h",
                "locale.h",
@@ -1922,7 +1919,6 @@ fn test_emscripten(target: &str) {
                "fcntl.h",
                "glob.h",
                "grp.h",
-               "iconv.h",
                "ifaddrs.h",
                "langinfo.h",
                "limits.h",