diff --git a/src/librustdoc/html/static/js/main.js b/src/librustdoc/html/static/js/main.js
index 4b55a0a69b663..32aa82195a962 100644
--- a/src/librustdoc/html/static/js/main.js
+++ b/src/librustdoc/html/static/js/main.js
@@ -886,6 +886,14 @@ function hideThemeButtonState() {
         }
     });
 
+    onEachLazy(document.querySelectorAll(".rustdoc-toggle > summary:not(.hideme)"), function(el) {
+        el.addEventListener("click", function(e) {
+            if (e.target.tagName != "SUMMARY") {
+                e.preventDefault();
+            }
+        });
+    });
+
     onEachLazy(document.getElementsByClassName("notable-traits"), function(e) {
         e.onclick = function() {
             this.getElementsByClassName('notable-traits-tooltiptext')[0]
diff --git a/src/test/rustdoc-gui/src/lib2/lib.rs b/src/test/rustdoc-gui/src/lib2/lib.rs
index f2e76b546c4af..79354ec874507 100644
--- a/src/test/rustdoc-gui/src/lib2/lib.rs
+++ b/src/test/rustdoc-gui/src/lib2/lib.rs
@@ -22,6 +22,8 @@ pub struct Foo {
 }
 
 impl Foo {
+    /// Some documentation
+    /// # A Heading
     pub fn a_method(&self) {}
 }
 
diff --git a/src/test/rustdoc-gui/toggle-click-deadspace.goml b/src/test/rustdoc-gui/toggle-click-deadspace.goml
new file mode 100644
index 0000000000000..4d08927a7bede
--- /dev/null
+++ b/src/test/rustdoc-gui/toggle-click-deadspace.goml
@@ -0,0 +1,8 @@
+// This test ensures that clicking on a method summary, but not on the "[-]",
+// doesn't toggle the <details>.
+goto: file://|DOC_PATH|/test_docs/struct.Foo.html
+assert-attribute: (".impl-items .rustdoc-toggle", {"open": ""})
+click: "h4.code-header" // This is the position of "pub" in "pub fn a_method"
+assert-attribute: (".impl-items .rustdoc-toggle", {"open": ""})
+click: ".impl-items .rustdoc-toggle summary::before" // This is the position of "[-]" next to that pub fn.
+assert-attribute-false: (".impl-items .rustdoc-toggle", {"open": ""})