diff --git a/bundles/org.openhab.core.addon/src/main/java/org/openhab/core/addon/internal/xml/AddonInfoAddonsXmlProvider.java b/bundles/org.openhab.core.addon/src/main/java/org/openhab/core/addon/internal/xml/AddonInfoAddonsXmlProvider.java
index b62ad2b64..e594d19e9 100644
--- a/bundles/org.openhab.core.addon/src/main/java/org/openhab/core/addon/internal/xml/AddonInfoAddonsXmlProvider.java
+++ b/bundles/org.openhab.core.addon/src/main/java/org/openhab/core/addon/internal/xml/AddonInfoAddonsXmlProvider.java
@@ -103,7 +103,7 @@ public class AddonInfoAddonsXmlProvider implements AddonInfoProvider {
             } catch (IOException e) {
                 logger.warn("File '{}' could not be read", f.getName());
             } catch (ConversionException e) {
-                logger.warn("File '{}' has invalid content", f.getName());
+                logger.warn("File '{}' has invalid content: {}", f.getName(), e.getMessage());
             } catch (XStreamException e) {
                 logger.warn("File '{}' could not be deserialized", f.getName());
             } catch (SecurityException e) {