diff --git a/src/macros.rs b/src/macros.rs
index 5a35e115d8f..bc07d5a5485 100644
--- a/src/macros.rs
+++ b/src/macros.rs
@@ -1117,7 +1117,6 @@ fn next_space(tok: &TokenKind) -> SpaceState {
         | TokenKind::BinOp(BinOpToken::And)
         | TokenKind::Tilde
         | TokenKind::At
-        | TokenKind::Comma
         | TokenKind::Dot
         | TokenKind::DotDot
         | TokenKind::DotDotDot
diff --git a/tests/source/macro_rules.rs b/tests/source/macro_rules.rs
index 5aaca0c83fa..f480385ae2f 100644
--- a/tests/source/macro_rules.rs
+++ b/tests/source/macro_rules.rs
@@ -4,6 +4,7 @@ macro_rules! m {
     () => ();
     ( $ x : ident ) => ();
     ( $ m1 : ident , $ m2 : ident , $ x : ident ) => ();
+    ( $ m1 : ident , $ m2 : ident , $ x : ident , ) => ();
     ( $($beginning:ident),*;$middle:ident;$($end:ident),* ) => ();
     ( $($beginning: ident),*; $middle: ident; $($end: ident),*; $($beginning: ident),*; $middle: ident; $($end: ident),* ) => {};
     ( $ name : ident ( $ ( $ dol : tt $ var : ident ) * ) $ ( $ body : tt ) * ) => ();
diff --git a/tests/target/macro_rules.rs b/tests/target/macro_rules.rs
index 97444aef404..b19813203d9 100644
--- a/tests/target/macro_rules.rs
+++ b/tests/target/macro_rules.rs
@@ -4,6 +4,7 @@ macro_rules! m {
     () => {};
     ($x:ident) => {};
     ($m1:ident, $m2:ident, $x:ident) => {};
+    ($m1:ident, $m2:ident, $x:ident,) => {};
     ($($beginning:ident),*; $middle:ident; $($end:ident),*) => {};
     (
         $($beginning:ident),*;
@@ -43,7 +44,7 @@ macro_rules! impl_a_method {
             $body
         }
         macro_rules! $n {
-            ($va: expr,$vb: expr) => {
+            ($va: expr, $vb: expr) => {
                 $n($va, $vb)
             };
         }
@@ -55,7 +56,7 @@ macro_rules! impl_a_method {
             $body
         }
         macro_rules! $n {
-            ($va: expr,$vb: expr,$vc: expr) => {
+            ($va: expr, $vb: expr, $vc: expr) => {
                 $n($va, $vb, $vc)
             };
         }
@@ -68,7 +69,7 @@ macro_rules! impl_a_method {
             $body
         }
         macro_rules! $n {
-            ($va: expr,$vb: expr,$vc: expr,$vd: expr) => {
+            ($va: expr, $vb: expr, $vc: expr, $vd: expr) => {
                 $n($va, $vb, $vc, $vd)
             };
         }