diff --git a/src/plugins/url/UrlPlugin.js b/src/plugins/url/UrlPlugin.js
index f965674ba..4f1fd36cb 100644
--- a/src/plugins/url/UrlPlugin.js
+++ b/src/plugins/url/UrlPlugin.js
@@ -151,7 +151,9 @@ export class UrlPlugin {
     }
 
     if (this.urlMode == 'hash') {
-      window.location.replace('#' + concatenatedPath);
+      // Use location.hash instead of location.replace('#...') to preserve
+      // the current pathname in SPA contexts.
+      window.location.hash = concatenatedPath;
     }
     this.oldLocationHash = urlStrPath;
   }
diff --git a/src/plugins/url/plugin.url.js b/src/plugins/url/plugin.url.js
index 6f9368ded..b26fd2d40 100644
--- a/src/plugins/url/plugin.url.js
+++ b/src/plugins/url/plugin.url.js
@@ -206,7 +206,10 @@ BookReader.prototype.urlUpdateFragment = function() {
     } else if (this.textFragmentPage && extractedPage != this.textFragmentPage) {
       textFragment = '';
     }
-    window.location.replace('#' + newFragment + newQueryStringSearch + textFragment);
+    // Use location.hash instead of location.replace('#...') to preserve
+    // the current pathname. location.replace('#foo') is a relative URL
+    // that can wipe the path in SPA contexts.
+    window.location.hash = newFragment + newQueryStringSearch + textFragment;
     this.oldLocationHash = newFragment + newQueryStringSearch + textFragment;
   }
 };