diff --git a/docs/changes.txt b/docs/changes.txt
index 3f3f8ad100..bfda87fa83 100644
--- a/docs/changes.txt
+++ b/docs/changes.txt
@@ -102,6 +102,7 @@ All (GUI):
   Polish Pro input.
 - Fixed wxHtmlWindow::SelectionToText() to correctly insert newlines after
   single-cell paragraphs.
+- Fixed wxHTML's line breaks handling in <pre> blocks broken in 2.8.8 (#10120)
 
 All (Unix):
 
diff --git a/src/html/m_pre.cpp b/src/html/m_pre.cpp
index 354e585384..0c20222a7c 100644
--- a/src/html/m_pre.cpp
+++ b/src/html/m_pre.cpp
@@ -46,9 +46,22 @@ static wxString LINKAGEMODE HtmlizeLinebreaks(const wxString& str)
                 }
                 out << wxT('>');
                 break;
+
+            // We need to translate any line break into exactly one <br>.
+            // Quoting HTML spec: "A line break is defined to be a carriage
+            // return (&#x000D;), a line feed (&#x000A;), or a carriage
+            // return/line feed pair."
+            case wxT('\r'):
+                {
+                    size_t j = i + 1;
+                    if ( j < len && str[j] == wxT('\n') )
+                        i = j;
+                }
+                // fall through
             case wxT('\n'):
                 out << wxT("<br>");
                 break;
+
             default:
                 out << str[i];
                 break;