diff --git a/rtengine/histmatching.cc b/rtengine/histmatching.cc
index d63428738..d7e80a759 100644
--- a/rtengine/histmatching.cc
+++ b/rtengine/histmatching.cc
@@ -219,7 +219,7 @@ void RawImageSource::getAutoMatchedToneCurve(const ColorManagementParams &cp, st
         RawMetaDataLocation rml;
         eSensorType sensor_type;
         int w, h;
-        std::unique_ptr<Thumbnail> thumb(Thumbnail::loadQuickFromRaw(getFileName(), rml, sensor_type, w, h, 1, false, true));
+        std::unique_ptr<Thumbnail> thumb(Thumbnail::loadQuickFromRaw(getFileName(), rml, sensor_type, w, h, 1, false, true, true));
         if (!thumb) {
             if (settings->verbose) {
                 std::cout << "histogram matching: no thumbnail found, generating a neutral curve" << std::endl;
diff --git a/rtengine/rtthumbnail.cc b/rtengine/rtthumbnail.cc
index 8c6b7155c..8b04a7be0 100644
--- a/rtengine/rtthumbnail.cc
+++ b/rtengine/rtthumbnail.cc
@@ -324,7 +324,7 @@ Image8 *load_inspector_mode(const Glib::ustring &fname, RawMetaDataLocation &rml
 
 } // namespace
 
-Thumbnail* Thumbnail::loadQuickFromRaw (const Glib::ustring& fname, RawMetaDataLocation& rml, eSensorType &sensorType, int &w, int &h, int fixwh, bool rotate, bool inspectorMode)
+Thumbnail* Thumbnail::loadQuickFromRaw (const Glib::ustring& fname, RawMetaDataLocation& rml, eSensorType &sensorType, int &w, int &h, int fixwh, bool rotate, bool inspectorMode, bool forHistogramMatching)
 {
     Thumbnail* tpp = new Thumbnail ();
     tpp->isRaw = 1;
diff --git a/rtengine/rtthumbnail.h b/rtengine/rtthumbnail.h
index be1340f3c..558d136ee 100644
--- a/rtengine/rtthumbnail.h
+++ b/rtengine/rtthumbnail.h
@@ -76,7 +76,7 @@ public:
     int      getImageWidth  (const procparams::ProcParams& pparams, int rheight, float &ratio);
     void     getDimensions  (int& w, int& h, double& scaleFac);
 
-    static Thumbnail* loadQuickFromRaw (const Glib::ustring& fname, rtengine::RawMetaDataLocation& rml, eSensorType &sensorType, int &w, int &h, int fixwh, bool rotate, bool inspectorMode = false);
+    static Thumbnail* loadQuickFromRaw (const Glib::ustring& fname, rtengine::RawMetaDataLocation& rml, eSensorType &sensorType, int &w, int &h, int fixwh, bool rotate, bool inspectorMode = false, bool forHistogramMatching = false);
     static Thumbnail* loadFromRaw (const Glib::ustring& fname, RawMetaDataLocation& rml, eSensorType &sensorType, int &w, int &h, int fixwh, double wbEq, bool rotate, bool forHistogramMatching = false);
     static Thumbnail* loadFromImage (const Glib::ustring& fname, int &w, int &h, int fixwh, double wbEq, bool inspectorMode = false);
     static RawMetaDataLocation loadMetaDataFromRaw (const Glib::ustring& fname);