diff --git a/src/Magnum/Audio/AbstractImporter.h b/src/Magnum/Audio/AbstractImporter.h
index 13daf32dd..1e069f2e5 100644
--- a/src/Magnum/Audio/AbstractImporter.h
+++ b/src/Magnum/Audio/AbstractImporter.h
@@ -61,6 +61,11 @@ checked by the implementation:
     there is any file opened.
 
 Plugin interface string is `"cz.mosra.magnum.Audio.AbstractImporter/0.1"`.
+
+@attention @ref Containers::Array instances returned from the plugin should
+    *not* use anything else than the default deleter, otherwise this can cause
+    dangling function pointer call on array destruction if the plugin gets
+    unloaded before the array is destroyed.
 */
 class MAGNUM_AUDIO_EXPORT AbstractImporter: public PluginManager::AbstractManagingPlugin<AbstractImporter> {
     CORRADE_PLUGIN_INTERFACE("cz.mosra.magnum.Audio.AbstractImporter/0.1")
diff --git a/src/Magnum/Text/AbstractFontConverter.h b/src/Magnum/Text/AbstractFontConverter.h
index 22c4c264c..04ceeef0e 100644
--- a/src/Magnum/Text/AbstractFontConverter.h
+++ b/src/Magnum/Text/AbstractFontConverter.h
@@ -69,6 +69,11 @@ checked by the implementation:
     array passed.
 
 Plugin interface string is `"cz.mosra.magnum.Text.AbstractFontConverter/0.1.2"`.
+
+@attention @ref Containers::Array instances returned from the plugin should
+    *not* use anything else than the default deleter, otherwise this can cause
+    dangling function pointer call on array destruction if the plugin gets
+    unloaded before the array is destroyed.
 */
 class MAGNUM_TEXT_EXPORT AbstractFontConverter: public PluginManager::AbstractPlugin {
     CORRADE_PLUGIN_INTERFACE("cz.mosra.magnum.Text.AbstractFontConverter/0.1.2")
diff --git a/src/Magnum/Trade/AbstractImageConverter.h b/src/Magnum/Trade/AbstractImageConverter.h
index b5215f60d..9613d9932 100644
--- a/src/Magnum/Trade/AbstractImageConverter.h
+++ b/src/Magnum/Trade/AbstractImageConverter.h
@@ -63,6 +63,11 @@ checked by the implementation:
     if @ref Feature::ConvertCompressedData is supported.
 
 Plugin interface string is `"cz.mosra.magnum.Trade.AbstractImageConverter/0.2.1"`.
+
+@attention @ref Containers::Array instances returned from the plugin should
+    *not* use anything else than the default deleter, otherwise this can cause
+    dangling function pointer call on array destruction if the plugin gets
+    unloaded before the array is destroyed.
 */
 class MAGNUM_EXPORT AbstractImageConverter: public PluginManager::AbstractManagingPlugin<AbstractImageConverter> {
     CORRADE_PLUGIN_INTERFACE("cz.mosra.magnum.Trade.AbstractImageConverter/0.2.1")
diff --git a/src/Magnum/Trade/AbstractImporter.h b/src/Magnum/Trade/AbstractImporter.h
index f0bf089e3..2c4ef1d9e 100644
--- a/src/Magnum/Trade/AbstractImporter.h
+++ b/src/Magnum/Trade/AbstractImporter.h
@@ -74,6 +74,11 @@ checked by the implementation:
 
 Plugin interface string is `"cz.mosra.magnum.Trade.AbstractImporter/0.3"`.
 
+@attention @ref Containers::Array instances returned from the plugin should
+    *not* use anything else than the default deleter, otherwise this can cause
+    dangling function pointer call on array destruction if the plugin gets
+    unloaded before the array is destroyed.
+
 @todo How to handle casting from std::unique_ptr<> in more convenient way?
 */
 class MAGNUM_EXPORT AbstractImporter: public PluginManager::AbstractManagingPlugin<AbstractImporter> {