2 files changed, 2 insertions, 2 deletions
diff --git a/src/libstd/net/tcp.rs b/src/libstd/net/tcp.rs
index 0f60b5b3ee4..f6f589cb6bd 100644
--- a/src/libstd/net/tcp.rs
+++ b/src/libstd/net/tcp.rs
@@ -927,7 +927,7 @@ mod tests {
     use time::{Instant, Duration};
     use thread;
 
-    fn each_ip(f: &mut FnMut(SocketAddr)) {
+    fn each_ip(f: &mut dyn FnMut(SocketAddr)) {
         f(next_test_ip4());
         f(next_test_ip6());
     }
diff --git a/src/libstd/net/udp.rs b/src/libstd/net/udp.rs
index d25e29999cb..0ebe3284b4f 100644
--- a/src/libstd/net/udp.rs
+++ b/src/libstd/net/udp.rs
@@ -826,7 +826,7 @@ mod tests {
     use time::{Instant, Duration};
     use thread;
 
-    fn each_ip(f: &mut FnMut(SocketAddr, SocketAddr)) {
+    fn each_ip(f: &mut dyn FnMut(SocketAddr, SocketAddr)) {
         f(next_test_ip4(), next_test_ip4());
         f(next_test_ip6(), next_test_ip6());
     }