diff --git a/.gitignore b/.gitignore
index 66c4575c358b538bf13ebd9b734d788258a9b0fa..35e19306d5ad301a49c55972414916a98254de60 100644
--- a/.gitignore
+++ b/.gitignore
@@ -167,6 +167,9 @@ LCS/AMC/AMCBase/lofarconf
 LCS/AMC/AMCImpl/Makefile.common
 LCS/AMC/AMCImpl/autoconf_share
 LCS/AMC/AMCImpl/lofarconf
+LCS/AMC/Makefile.common
+LCS/AMC/autoconf_share
+LCS/AMC/lofarconf
 LCS/Blob/Makefile.common
 LCS/Blob/autoconf_share
 LCS/Blob/lofarconf
diff --git a/LCS/AMC/AMCBase/include/AMCBase/Converter.h b/LCS/AMC/AMCBase/include/AMCBase/Converter.h
index 75835238255ca0d1ea300d7ef636adb5e217a7fa..13e0f448d3d4a29401d5f4cd83bce1c04ff1c282 100644
--- a/LCS/AMC/AMCBase/include/AMCBase/Converter.h
+++ b/LCS/AMC/AMCBase/include/AMCBase/Converter.h
@@ -66,6 +66,11 @@ namespace LOFAR
     // coordinates, earth positions, and points in time. In the latter case,
     // the conversion routine will convert the input sky coordinates for the
     // given earth position and point in time.
+    //
+    // \note None of the member functions below can be made \c const, because
+    // the ConverterClient class that implements these functions has data
+    // members that cannot be \c const (e.g., DH_Request, DH_Result,
+    // TH_Socket, and Connection). Alas!
     class Converter
     {
     public: