diff --git a/tools/versioner/src/Preprocessor.cpp b/tools/versioner/src/Preprocessor.cpp
index 2703842c7..757a3922c 100644
--- a/tools/versioner/src/Preprocessor.cpp
+++ b/tools/versioner/src/Preprocessor.cpp
@@ -336,7 +336,6 @@ static void mergeGuards(std::deque<std::string>& file_lines, GuardMap& guard_map
 
         current_location.column = pos + 1;
         if (line[pos] != '/') {
-          D("Trailing character '%c' is not a slash: %s\n", line[pos], line.substr(pos).c_str());
           valid = false;
           break;
         }