diff --git a/src/slic3r/GUI/GLCanvas3D.cpp b/src/slic3r/GUI/GLCanvas3D.cpp
index 3a919c800d..0aeb1b504e 100644
--- a/src/slic3r/GUI/GLCanvas3D.cpp
+++ b/src/slic3r/GUI/GLCanvas3D.cpp
@@ -10655,6 +10655,14 @@ void GLCanvas3D::_set_warning_notification(EWarning warning, bool state)
                 notification_manager.close_slicing_customize_error_notification(NotificationType::BBLNozzleFilamentIncompatible, NotificationLevel::WarningNotificationLevel);
             }
         }
+        else if (warning == EWarning::SingleExtruderMixedFilament) {
+            // Close by type: check_single_extruder_mixed_filament_risk() clears the shared text
+            // buffer on every call, so a close-by-text would miss once the risk is gone.
+            if (state)
+                notification_manager.push_slicing_customize_error_notification(NotificationType::BBLSingleExtruderMixedFilamentRisk, NotificationLevel::WarningNotificationLevel, text);
+            else
+                notification_manager.close_slicing_customize_error_notification(NotificationType::BBLSingleExtruderMixedFilamentRisk, NotificationLevel::WarningNotificationLevel);
+        }
         else {
             if (state)
                 notification_manager.push_plater_warning_notification(text);
diff --git a/src/slic3r/GUI/NotificationManager.hpp b/src/slic3r/GUI/NotificationManager.hpp
index 7a3e6b8bb5..bf0a5cfe1a 100644
--- a/src/slic3r/GUI/NotificationManager.hpp
+++ b/src/slic3r/GUI/NotificationManager.hpp
@@ -174,6 +174,8 @@ enum class NotificationType
 	BBLBedFilamentIncompatible,
     BBLMixUsePLAAndPETG,
 	BBLNozzleFilamentIncompatible,
+    // A mixed-color filament is printed on a single-nozzle printer (frequent changes and purging).
+    BBLSingleExtruderMixedFilamentRisk,
     OrcaSharedProfilesAvailable,
 	OrcaCloudAPIError,
     OrcaSyncConflict,