diff --git a/src/CppParser/CppParser.cpp b/src/CppParser/CppParser.cpp
index fe0e7aa9..723bcda3 100644
--- a/src/CppParser/CppParser.cpp
+++ b/src/CppParser/CppParser.cpp
@@ -35,6 +35,8 @@ ParserResult::ParserResult()
 {
 }
 
+ParserDiagnostic::ParserDiagnostic() {}
+
 DEF_STRING(ParserDiagnostic, FileName)
 DEF_STRING(ParserDiagnostic, Message)
 
diff --git a/src/CppParser/CppParser.h b/src/CppParser/CppParser.h
index 26b7bab9..a105cc6f 100644
--- a/src/CppParser/CppParser.h
+++ b/src/CppParser/CppParser.h
@@ -53,6 +53,7 @@ enum struct ParserDiagnosticLevel
 
 struct CS_API ParserDiagnostic
 {
+    ParserDiagnostic();
     STRING(FileName)
     STRING(Message)
     ParserDiagnosticLevel Level;