diff --git a/modules/juce_blocks_basics/topology/juce_PhysicalTopologySource.cpp b/modules/juce_blocks_basics/topology/juce_PhysicalTopologySource.cpp
index b913258882..ae88a60ee6 100644
--- a/modules/juce_blocks_basics/topology/juce_PhysicalTopologySource.cpp
+++ b/modules/juce_blocks_basics/topology/juce_PhysicalTopologySource.cpp
@@ -363,8 +363,13 @@ struct PhysicalTopologySource::Internal
     static bool versionNumberAddedToBlock (const juce::Array<DeviceInfo>& devices, Block::UID uid, juce::String version) noexcept
     {
         for (auto&& d : devices)
-            if (d.uid == uid && memcmp (d.version.version, version.toRawUTF8(), d.version.length) != 0)
+        {
+            String deviceVersion (reinterpret_cast<const char*> (d.version.version),
+                                  jmin (static_cast<size_t> (d.version.length), sizeof (d.version.version)));
+
+            if (d.uid == uid && deviceVersion != version)
                 return true;
+        }
 
         return false;
     }