diff --git a/src/language-css/printer-postcss.js b/src/language-css/printer-postcss.js
index 72190761b..8b6c5fd15 100644
--- a/src/language-css/printer-postcss.js
+++ b/src/language-css/printer-postcss.js
@@ -285,18 +285,24 @@ function genericPrint(path, options, print) {
       const atRuleAncestorNode = getAncestorNode(path, "css-atrule");
       const insideInExtend =
         atRuleAncestorNode && atRuleAncestorNode.name === "extend";
-      const insideInCustomSelector =
+      const insideInCustomSelectorAtRule =
         atRuleAncestorNode && atRuleAncestorNode.name === "custom-selector";
+      const insideInNestAtRule =
+        atRuleAncestorNode && atRuleAncestorNode.name === "nest";
 
       return group(
         concat([
-          insideInCustomSelector
+          insideInCustomSelectorAtRule
             ? concat([atRuleAncestorNode.customSelector, line])
             : "",
           join(
             concat([
               ",",
-              insideInExtend || insideInCustomSelector ? line : hardline
+              insideInExtend ||
+              insideInCustomSelectorAtRule ||
+              insideInNestAtRule
+                ? line
+                : hardline
             ]),
             path.map(print, "nodes")
           )
diff --git a/tests/css_postcss_plugins/__snapshots__/jsfmt.spec.js.snap b/tests/css_postcss_plugins/__snapshots__/jsfmt.spec.js.snap
index 2a376b4ac..cd6544af6 100644
--- a/tests/css_postcss_plugins/__snapshots__/jsfmt.spec.js.snap
+++ b/tests/css_postcss_plugins/__snapshots__/jsfmt.spec.js.snap
@@ -326,6 +326,15 @@ a {
     }
   }
 }
+a {
+  order: 1;
+  @nest very-very-very-very-very-very-very-very-very-long-selector &, very-very-very-very-very-very-very-very-very-long-selector & {
+    order: 2;
+  }
+  @nest very-very-very-very-very-very-very-very-very-long-selector + very-very-very-very-very-very-very-very-very-long-selector  &, very-very-very-very-very-very-very-very-very-long-selector very-very-very-very-very-very-very-very-very-long-selector & {
+    order: 2;
+  }
+}
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 a {
   order: 1;
@@ -395,11 +404,9 @@ b {
 a,
 b {
   order: 1;
-  @nest & c,
-    & d {
+  @nest & c, & d {
     order: 2;
-    @nest & e,
-      & f {
+    @nest & e, & f {
       order: 3;
     }
     order: 4;
@@ -468,8 +475,7 @@ f {
 a,
 b {
   order: 1;
-  @nest c,
-    d {
+  @nest c, d {
     order: 2;
   }
 }
@@ -529,5 +535,20 @@ a {
     }
   }
 }
+a {
+  order: 1;
+  @nest very-very-very-very-very-very-very-very-very-long-selector &,
+    very-very-very-very-very-very-very-very-very-long-selector & {
+    order: 2;
+  }
+  @nest very-very-very-very-very-very-very-very-very-long-selector
+      + very-very-very-very-very-very-very-very-very-long-selector
+      &,
+    very-very-very-very-very-very-very-very-very-long-selector
+      very-very-very-very-very-very-very-very-very-long-selector
+      & {
+    order: 2;
+  }
+}
 
 `;
diff --git a/tests/css_postcss_plugins/postcss-nesting.css b/tests/css_postcss_plugins/postcss-nesting.css
index f2c278d42..34a44b76b 100644
--- a/tests/css_postcss_plugins/postcss-nesting.css
+++ b/tests/css_postcss_plugins/postcss-nesting.css
@@ -190,3 +190,12 @@ a {
     }
   }
 }
+a {
+  order: 1;
+  @nest very-very-very-very-very-very-very-very-very-long-selector &, very-very-very-very-very-very-very-very-very-long-selector & {
+    order: 2;
+  }
+  @nest very-very-very-very-very-very-very-very-very-long-selector + very-very-very-very-very-very-very-very-very-long-selector  &, very-very-very-very-very-very-very-very-very-long-selector very-very-very-very-very-very-very-very-very-long-selector & {
+    order: 2;
+  }
+}