diff --git a/ConfigureChecks.cmake b/ConfigureChecks.cmake
index 3d2632c0..a9f9f17a 100644
--- a/ConfigureChecks.cmake
+++ b/ConfigureChecks.cmake
@@ -212,7 +212,7 @@ check_cxx_source_compiles("
   }
 " HAVE_ISO_STRDUP)
 
-# Check for libz using the cmake supplied FindZLIB.cmake
+# Determine whether zlib is installed.
 
 if(NOT ZLIB_SOURCE)
   find_package(ZLIB)
@@ -223,6 +223,8 @@ if(NOT ZLIB_SOURCE)
   endif()
 endif()
 
+# Determine whether CppUnit is installed.
+
 if(BUILD_TESTS AND NOT BUILD_SHARED_LIBS)
   find_package(CppUnit)
   if(NOT CppUnit_FOUND)
diff --git a/config.h.cmake b/config.h.cmake
index 55affab6..7ac72410 100644
--- a/config.h.cmake
+++ b/config.h.cmake
@@ -20,10 +20,10 @@
 #cmakedefine   HAVE_VSNPRINTF 1
 #cmakedefine   HAVE_VSPRINTF_S 1
 
-/* Defined if your compiler supports ISO _strdup. */
+/* Defined if your compiler supports ISO _strdup */
 #cmakedefine   HAVE_ISO_STRDUP 1
 
-/* Defined if you have libz */
+/* Defined if zlib is installed */
 #cmakedefine   HAVE_ZLIB 1
 
 /* Indicates whether debug messages are shown even in release mode */