diff --git a/src/engine/controls/loopingcontrol.cpp b/src/engine/controls/loopingcontrol.cpp
index 3213f58de3fd..9b98ffe65af2 100644
--- a/src/engine/controls/loopingcontrol.cpp
+++ b/src/engine/controls/loopingcontrol.cpp
@@ -703,8 +703,14 @@ void LoopingControl::setLoop(mixxx::audio::FramePos startPosition,
     }
 
     // Don't allow loop size widget setting to trigger creation of another loop.
+    double loaded_loop_size = findBeatloopSizeForLoop(startPosition, endPosition);
+    if (loaded_loop_size == -1) {
+        // Loop size doesn't match any of the pre-defined sizes,
+        // keep the current size
+        return;
+    }
     m_pCOBeatLoopSize->blockSignals(true);
-    m_pCOBeatLoopSize->setAndConfirm(findBeatloopSizeForLoop(startPosition, endPosition));
+    m_pCOBeatLoopSize->setAndConfirm(loaded_loop_size);
     m_pCOBeatLoopSize->blockSignals(false);
 }