diff --git a/src/ChatPage.cpp b/src/ChatPage.cpp
index 63b2e409..49e37b92 100644
--- a/src/ChatPage.cpp
+++ b/src/ChatPage.cpp
@@ -1320,7 +1320,7 @@ ChatPage::showSideBars()
         top_bar_->disableBackButton();
 }
 
-int
+uint64_t
 ChatPage::timelineWidth()
 {
         int sidebarWidth = sideBar_->size().width();
diff --git a/src/ChatPage.h b/src/ChatPage.h
index 2000b9e5..dc30e497 100644
--- a/src/ChatPage.h
+++ b/src/ChatPage.h
@@ -67,7 +67,7 @@ public:
         void deleteConfigs();
 
         //! Calculate the width of the message timeline.
-        int timelineWidth();
+        uint64_t timelineWidth();
         bool isSideBarExpanded();
         //! Hide the room & group list (if it was visible).
         void hideSideBars();
diff --git a/src/MainWindow.cpp b/src/MainWindow.cpp
index 95c56554..e6e75ee1 100644
--- a/src/MainWindow.cpp
+++ b/src/MainWindow.cpp
@@ -181,8 +181,8 @@ MainWindow::resizeEvent(QResizeEvent *event)
 void
 MainWindow::adjustSideBars()
 {
-        const int timelineWidth = chat_page_->timelineWidth();
-        const int minAvailableWidth =
+        const uint64_t timelineWidth = chat_page_->timelineWidth();
+        const uint64_t minAvailableWidth =
           conf::sideBarCollapsePoint + ui::sidebar::CommunitiesSidebarSize;
 
         if (timelineWidth < minAvailableWidth && !chat_page_->isSideBarExpanded()) {