--- src_gui_text_qfontdatabase_x11.cpp.orig	2012-09-22 19:44:06.383807368 +0200
+++ src_gui_text_qfontdatabase_x11.cpp	2012-09-22 19:46:19.259810526 +0200
@@ -729,11 +729,12 @@
 static int getFCWeight(int fc_weight)
 {
     int qtweight = QFont::Black;
-    if (fc_weight <= (FC_WEIGHT_LIGHT + FC_WEIGHT_MEDIUM) / 2)
+    if (fc_weight <= (FC_WEIGHT_LIGHT + FC_WEIGHT_REGULAR) / 2)
         qtweight = QFont::Light;
-    else if (fc_weight <= (FC_WEIGHT_MEDIUM + FC_WEIGHT_DEMIBOLD) / 2)
+    else if (fc_weight <= (FC_WEIGHT_REGULAR + FC_WEIGHT_MEDIUM) / 2)
         qtweight = QFont::Normal;
     else if (fc_weight <= (FC_WEIGHT_DEMIBOLD + FC_WEIGHT_BOLD) / 2)
+        // Will also map Medium to DemiBold, but avoids API/ABI break
         qtweight = QFont::DemiBold;
     else if (fc_weight <= (FC_WEIGHT_BOLD + FC_WEIGHT_BLACK) / 2)
         qtweight = QFont::Bold;