diff --git a/AUTHORS b/AUTHORS
index 400e96acf..fa202af31 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -100,6 +100,7 @@ The following submitted code, packages or analysis, and deserve special thanks:
   Natanael Copa
   Marton Suranyi
   Nicolas Appriou
+  Jochen Sprickerhof
 
 Thanks to the following, who submitted detailed bug reports and excellent
 suggestions:
diff --git a/ChangeLog b/ChangeLog
index f4dd6b753..87cf746e8 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -33,6 +33,7 @@ Features
 Bugs
 - TD-42 Cannot compile taskd - GNUTLS_VERSION undefined in diag.cpp (thanks
         to Michele Vetturi).
+- TD-45 Fix preprocessor define (thanks to Jochen Sprickerhof).
 - TW-1282 incorrect URLs in man task-sync (thanks to Jeremiah Marks).
 - #1511 sync init crashes if client certification file is empty or invalid
         (thanks to Marton Suranyi).
diff --git a/src/TDB2.cpp b/src/TDB2.cpp
index 1df1f81a2..a74ab1e4a 100644
--- a/src/TDB2.cpp
+++ b/src/TDB2.cpp
@@ -1080,7 +1080,6 @@ void TDB2::show_diff (
               << view.render ()
               << "\n";
   }
-
 }
 
 ////////////////////////////////////////////////////////////////////////////////
diff --git a/src/commands/CmdDiagnostics.cpp b/src/commands/CmdDiagnostics.cpp
index d57a72241..5dd764fba 100644
--- a/src/commands/CmdDiagnostics.cpp
+++ b/src/commands/CmdDiagnostics.cpp
@@ -167,7 +167,7 @@ int CmdDiagnostics::execute (std::string& output)
 #ifdef HAVE_LIBGNUTLS
 #ifdef GNUTLS_VERSION
       << GNUTLS_VERSION
-#elif LIBGNUTLS_VERSION
+#elif defined LIBGNUTLS_VERSION
       << LIBGNUTLS_VERSION
 #endif
 #else