diff --git a/src/fontembedder.cpp b/src/fontembedder.cpp
index 985286ad..313990eb 100644
--- a/src/fontembedder.cpp
+++ b/src/fontembedder.cpp
@@ -27,6 +27,8 @@
 #include <QtCore/QFile>
 #include <QtCore/QTextStream>
 
+#include <KDebug>
+
 using namespace std;
 
 static quint32 charVal(QChar val)
@@ -75,6 +77,8 @@ int main(int argc, char **argv)
     QTextStream input(&inFile);
 
     quint32 glyphStates[128];
+    QMap<quint32, int> glyphMap;
+
     for (int i = 0; i < 128; ++i)
         glyphStates[i] = 0; //nothing..
 
@@ -94,6 +98,13 @@ int main(int argc, char **argv)
         glyph = glyph - 0x2500;
 
         glyphStates[glyph] = readGlyph(input);
+        // kWarning()<<glyph<<";"<<glyphStates[glyph];
+
+        if (glyphMap.contains(glyphStates[glyph])) {
+            kWarning()<<"Code "<<glyph<<" and "<<glyphMap.value(glyphStates[glyph])<<"have the same glyph state"<<glyphStates[glyph];
+        }
+        glyphMap[glyphStates[glyph]] = glyph;
+        
     }
 
     //Output.