diff --git a/lib/checkuninitvar.cpp b/lib/checkuninitvar.cpp
index 8a664a98c..ba80f405a 100644
--- a/lib/checkuninitvar.cpp
+++ b/lib/checkuninitvar.cpp
@@ -1314,6 +1314,7 @@ CheckUninitVar::MyFileInfo::FunctionArg::FunctionArg(const Tokenizer *tokenizer,
     id(FUNCTION_ID(scope->function)),
     functionName(scope->className),
     argnr(argnr_),
+    argnr2(0),
     variableName(scope->function->getArgumentVar(argnr-1)->name())
 {
     location.fileName = tokenizer->list.file(tok);