diff --git a/src/internfile/Filter.h b/src/internfile/Filter.h
index 4ed70a1b..328a1d29 100644
--- a/src/internfile/Filter.h
+++ b/src/internfile/Filter.h
@@ -21,6 +21,8 @@
 #include <set>
 #include <map>
 
+class RclConfig;
+
 namespace Dijon
 {
     class Filter;
@@ -54,7 +56,7 @@ namespace Dijon
 	Filter(const std::string &mime_type) : m_mimeType(mime_type) {}
 	/// Destroys the filter.
 	virtual ~Filter() {}
-
+	virtual void setConfig(RclConfig *) = 0;
 
 	// Enumerations.
 
diff --git a/src/internfile/mimehandler.cpp b/src/internfile/mimehandler.cpp
index fda87fc0..61a9d514 100644
--- a/src/internfile/mimehandler.cpp
+++ b/src/internfile/mimehandler.cpp
@@ -315,6 +315,10 @@ Dijon::Filter *getMimeHandler(const string &mtype, RclConfig *cfg,
 out:
     if (h) {
 	h->set_property(Dijon::Filter::DEFAULT_CHARSET, cfg->getDefCharset());
+	// In multithread context, and in case this handler is out
+	// from the cache, it may have a config pointer belonging to
+	// another thread. Fix it.
+	h->setConfig(cfg);
     }
     return h;
 }
diff --git a/src/internfile/mimehandler.h b/src/internfile/mimehandler.h
index 4124f587..03ec039e 100644
--- a/src/internfile/mimehandler.h
+++ b/src/internfile/mimehandler.h
@@ -36,6 +36,10 @@ public:
 	  m_forPreview(false), m_havedoc(false)
     {}
     virtual ~RecollFilter() {}
+    virtual void setConfig(RclConfig *config)
+    {
+	m_config = config;
+    }
     virtual bool set_property(Properties p, const string &v) {
 	switch (p) {
 	case DJF_UDI: