diff --git a/Examples/FeatureExtraction/ExtractRoadExample.cxx b/Examples/FeatureExtraction/ExtractRoadExample.cxx
index f681fbc6e76bd901b8b2c8f533e9937c89e32cc2..51607fe69b6f1b5fcd9d8aa5836eef447fc090e0 100755
--- a/Examples/FeatureExtraction/ExtractRoadExample.cxx
+++ b/Examples/FeatureExtraction/ExtractRoadExample.cxx
@@ -272,7 +272,7 @@ int main( int argc, char * argv[] )
    // Software Guide : BeginLatex
    //
    // Roads are not likely to have sharp angle. Therefore we set the max angle parameter,
-   // as well as the link angular threshold. The value is typicaly $\frac{\Pi}{8}$.
+   // as well as the link angular threshold. The value is typicaly $\frac{\pi}{8}$.
    //
    // Software Guide : EndLatex