diff --git a/config/nimdoc.cfg b/config/nimdoc.cfg
index 945a3dc6c0..3560c0d65d 100644
--- a/config/nimdoc.cfg
+++ b/config/nimdoc.cfg
@@ -240,21 +240,12 @@ function main() {
 
   toggleSwitch.addEventListener('change', switchTheme, false);
 
+  const currentTheme = localStorage.getItem('theme') ? localStorage.getItem('theme') : null;
+  if (currentTheme) {
+    document.documentElement.setAttribute('data-theme', currentTheme);
 
-  if (window.matchMedia && window.matchMedia('(prefers-color-scheme: dark)').matches) {
-    document.documentElement.setAttribute('data-theme', "dark");
-    toggleSwitch.checked = true;
-  } else if (window.matchMedia && window.matchMedia('(prefers-color-scheme: light)').matches) {
-    document.documentElement.setAttribute('data-theme', "light");
-    toggleSwitch.checked = false;
-  } else {
-    const currentTheme = localStorage.getItem('theme') ? localStorage.getItem('theme') : null;
-    if (currentTheme) {
-      document.documentElement.setAttribute('data-theme', currentTheme);
-
-      if (currentTheme === 'dark') {
-        toggleSwitch.checked = true;
-      }
+    if (currentTheme === 'dark') {
+      toggleSwitch.checked = true;
     }
   }
 }
diff --git a/nimdoc/test_out_index_dot_html/expected/index.html b/nimdoc/test_out_index_dot_html/expected/index.html
index a8b65b2c9b..f353345037 100644
--- a/nimdoc/test_out_index_dot_html/expected/index.html
+++ b/nimdoc/test_out_index_dot_html/expected/index.html
@@ -47,21 +47,12 @@ function main() {
 
   toggleSwitch.addEventListener('change', switchTheme, false);
 
+  const currentTheme = localStorage.getItem('theme') ? localStorage.getItem('theme') : null;
+  if (currentTheme) {
+    document.documentElement.setAttribute('data-theme', currentTheme);
 
-  if (window.matchMedia && window.matchMedia('(prefers-color-scheme: dark)').matches) {
-    document.documentElement.setAttribute('data-theme', "dark");
-    toggleSwitch.checked = true;
-  } else if (window.matchMedia && window.matchMedia('(prefers-color-scheme: light)').matches) {
-    document.documentElement.setAttribute('data-theme', "light");
-    toggleSwitch.checked = false;
-  } else {
-    const currentTheme = localStorage.getItem('theme') ? localStorage.getItem('theme') : null;
-    if (currentTheme) {
-      document.documentElement.setAttribute('data-theme', currentTheme);
-
-      if (currentTheme === 'dark') {
-        toggleSwitch.checked = true;
-      }
+    if (currentTheme === 'dark') {
+      toggleSwitch.checked = true;
     }
   }
 }
diff --git a/nimdoc/test_out_index_dot_html/expected/theindex.html b/nimdoc/test_out_index_dot_html/expected/theindex.html
index 095dd74716..b2863f99a1 100644
--- a/nimdoc/test_out_index_dot_html/expected/theindex.html
+++ b/nimdoc/test_out_index_dot_html/expected/theindex.html
@@ -47,21 +47,12 @@ function main() {
 
   toggleSwitch.addEventListener('change', switchTheme, false);
 
+  const currentTheme = localStorage.getItem('theme') ? localStorage.getItem('theme') : null;
+  if (currentTheme) {
+    document.documentElement.setAttribute('data-theme', currentTheme);
 
-  if (window.matchMedia && window.matchMedia('(prefers-color-scheme: dark)').matches) {
-    document.documentElement.setAttribute('data-theme', "dark");
-    toggleSwitch.checked = true;
-  } else if (window.matchMedia && window.matchMedia('(prefers-color-scheme: light)').matches) {
-    document.documentElement.setAttribute('data-theme', "light");
-    toggleSwitch.checked = false;
-  } else {
-    const currentTheme = localStorage.getItem('theme') ? localStorage.getItem('theme') : null;
-    if (currentTheme) {
-      document.documentElement.setAttribute('data-theme', currentTheme);
-
-      if (currentTheme === 'dark') {
-        toggleSwitch.checked = true;
-      }
+    if (currentTheme === 'dark') {
+      toggleSwitch.checked = true;
     }
   }
 }
diff --git a/nimdoc/testproject/expected/subdir/subdir_b/utils.html b/nimdoc/testproject/expected/subdir/subdir_b/utils.html
index 6e83f718ff..eefbcfdf94 100644
--- a/nimdoc/testproject/expected/subdir/subdir_b/utils.html
+++ b/nimdoc/testproject/expected/subdir/subdir_b/utils.html
@@ -47,21 +47,12 @@ function main() {
 
   toggleSwitch.addEventListener('change', switchTheme, false);
 
+  const currentTheme = localStorage.getItem('theme') ? localStorage.getItem('theme') : null;
+  if (currentTheme) {
+    document.documentElement.setAttribute('data-theme', currentTheme);
 
-  if (window.matchMedia && window.matchMedia('(prefers-color-scheme: dark)').matches) {
-    document.documentElement.setAttribute('data-theme', "dark");
-    toggleSwitch.checked = true;
-  } else if (window.matchMedia && window.matchMedia('(prefers-color-scheme: light)').matches) {
-    document.documentElement.setAttribute('data-theme', "light");
-    toggleSwitch.checked = false;
-  } else {
-    const currentTheme = localStorage.getItem('theme') ? localStorage.getItem('theme') : null;
-    if (currentTheme) {
-      document.documentElement.setAttribute('data-theme', currentTheme);
-
-      if (currentTheme === 'dark') {
-        toggleSwitch.checked = true;
-      }
+    if (currentTheme === 'dark') {
+      toggleSwitch.checked = true;
     }
   }
 }
diff --git a/nimdoc/testproject/expected/testproject.html b/nimdoc/testproject/expected/testproject.html
index 648ecb6294..479a2e89d8 100644
--- a/nimdoc/testproject/expected/testproject.html
+++ b/nimdoc/testproject/expected/testproject.html
@@ -47,21 +47,12 @@ function main() {
 
   toggleSwitch.addEventListener('change', switchTheme, false);
 
+  const currentTheme = localStorage.getItem('theme') ? localStorage.getItem('theme') : null;
+  if (currentTheme) {
+    document.documentElement.setAttribute('data-theme', currentTheme);
 
-  if (window.matchMedia && window.matchMedia('(prefers-color-scheme: dark)').matches) {
-    document.documentElement.setAttribute('data-theme', "dark");
-    toggleSwitch.checked = true;
-  } else if (window.matchMedia && window.matchMedia('(prefers-color-scheme: light)').matches) {
-    document.documentElement.setAttribute('data-theme', "light");
-    toggleSwitch.checked = false;
-  } else {
-    const currentTheme = localStorage.getItem('theme') ? localStorage.getItem('theme') : null;
-    if (currentTheme) {
-      document.documentElement.setAttribute('data-theme', currentTheme);
-
-      if (currentTheme === 'dark') {
-        toggleSwitch.checked = true;
-      }
+    if (currentTheme === 'dark') {
+      toggleSwitch.checked = true;
     }
   }
 }
diff --git a/nimdoc/testproject/expected/theindex.html b/nimdoc/testproject/expected/theindex.html
index 0b835c4091..66dea92fcc 100644
--- a/nimdoc/testproject/expected/theindex.html
+++ b/nimdoc/testproject/expected/theindex.html
@@ -47,21 +47,12 @@ function main() {
 
   toggleSwitch.addEventListener('change', switchTheme, false);
 
+  const currentTheme = localStorage.getItem('theme') ? localStorage.getItem('theme') : null;
+  if (currentTheme) {
+    document.documentElement.setAttribute('data-theme', currentTheme);
 
-  if (window.matchMedia && window.matchMedia('(prefers-color-scheme: dark)').matches) {
-    document.documentElement.setAttribute('data-theme', "dark");
-    toggleSwitch.checked = true;
-  } else if (window.matchMedia && window.matchMedia('(prefers-color-scheme: light)').matches) {
-    document.documentElement.setAttribute('data-theme', "light");
-    toggleSwitch.checked = false;
-  } else {
-    const currentTheme = localStorage.getItem('theme') ? localStorage.getItem('theme') : null;
-    if (currentTheme) {
-      document.documentElement.setAttribute('data-theme', currentTheme);
-
-      if (currentTheme === 'dark') {
-        toggleSwitch.checked = true;
-      }
+    if (currentTheme === 'dark') {
+      toggleSwitch.checked = true;
     }
   }
 }