diff --git a/examples/c++/class.cpp b/examples/c++/class.cpp
index 1ed51f7..bf5907f 100644
--- a/examples/c++/class.cpp
+++ b/examples/c++/class.cpp
@@ -9,7 +9,7 @@ See constructor.cpp in this directory for compilation instructions.
 Here is a transcript showing a test run under Linux using the
 GNU g++ compiler:
 
-    % g++ -shared -fPIC -I/usr/elk/include -c class.c -o class.so
+    % g++ -shared -fPIC -I/usr/include/elk class.cpp -o class.so -lelk
     %
     % scheme
     > (load 'class.so)
diff --git a/examples/c++/constructor.cpp b/examples/c++/constructor.cpp
index a2dc560..3f9b91e 100644
--- a/examples/c++/constructor.cpp
+++ b/examples/c++/constructor.cpp
@@ -5,9 +5,11 @@ are invoked by Elk when loading a compiled C++ file (when exiting).
 
 o  Compile the shared object, for instance:
 
-     CC -pic -shared -I/usr/elk/include constructor.c -o constructor.so
+   CC -pic -shared -I/usr/elk/include constructor.cpp -o constructor.so -lelk
 
-     g++ -fPIC -shared -I/usr/include/elk constructor.c -o constructor.so
+   or:
+
+   g++ -fPIC -shared -I/usr/include/elk constructor.ppc -o constructor.so -lelk
 
 o  Now "(load 'constructor.so)", observe the "invoking constructor" message,
    and evaluate "(test)", which should return 3.  Terminate the interpreter