diff --git a/src/app/stacktrace_win_dlg.h b/src/app/stacktrace_win_dlg.h
index 62d8da7fc..e9e7ff307 100644
--- a/src/app/stacktrace_win_dlg.h
+++ b/src/app/stacktrace_win_dlg.h
@@ -60,7 +60,11 @@ public:
             "</p></font>"
             "<br/><hr><br/>"
             "<p align=center><font size=4>"
-            "qBittorrent version: " QBT_VERSION "<br/>"
+#if defined(__x86_64__) || defined(_M_X64)
+            "qBittorrent version: " QBT_VERSION " (64-bit)<br/>"
+#else
+            "qBittorrent version: " QBT_VERSION " (32-bit)<br/>"
+#endif
             "Libtorrent version: %1<br/>"
             "Qt version: " QT_VERSION_STR "<br/>"
             "Boost version: %2<br/>"
diff --git a/src/gui/about_imp.h b/src/gui/about_imp.h
index 310aa72bb..2ff663edc 100644
--- a/src/gui/about_imp.h
+++ b/src/gui/about_imp.h
@@ -47,7 +47,11 @@ public:
         setAttribute(Qt::WA_DeleteOnClose);
 
         // Title
-        lb_name->setText("<b><h2>qBittorrent " QBT_VERSION "</h2></b>");
+#if defined(__x86_64__) || defined(_M_X64)
+        lb_name->setText("<b><h2>qBittorrent " QBT_VERSION " (64-bit)</h2></b>");
+#else
+        lb_name->setText("<b><h2>qBittorrent " QBT_VERSION " (32-bit)</h2></b>");
+#endif
 
         // About
         QString aboutText = QString(