diff --git a/samples/bin/datas/shader/edge.sfx b/samples/bin/datas/shader/edge.sfx
index ce0d99c6..d944c583 100644
--- a/samples/bin/datas/shader/edge.sfx
+++ b/samples/bin/datas/shader/edge.sfx
@@ -21,7 +21,8 @@ void main()
                  texture2D(texture, gl_TexCoord[0].xy + offx - offy) *  1.0 +
                  texture2D(texture, gl_TexCoord[0].xy + offx + offy) * -1.0;
 
-    float edge = sqrt(hEdge.rgb * hEdge.rgb + vEdge.rgb * vEdge.rgb);
+    vec3 result = sqrt(hEdge.rgb * hEdge.rgb + vEdge.rgb * vEdge.rgb);
+    float edge = length(result);
     if (edge > threshold)
         gl_FragColor.rgb = vec3(0, 0, 0);
     else
diff --git a/samples/ftp/Ftp.cpp b/samples/ftp/Ftp.cpp
index c66fcf6c..b0c001ec 100644
--- a/samples/ftp/Ftp.cpp
+++ b/samples/ftp/Ftp.cpp
@@ -163,7 +163,7 @@ int main()
             {
                 // Download a file from server
                 std::string filename, directory;
-                std::cout << "filename of the file to download (relative to current directory): ";
+                std::cout << "Filename of the file to download (relative to current directory): ";
                 std::cin  >> filename;
                 std::cout << "Directory to download the file to: ";
                 std::cin  >> directory;