diff --git a/crlcore/src/ccore/acmsigda/AcmSigdaParserGrammar.yy b/crlcore/src/ccore/acmsigda/AcmSigdaParserGrammar.yy
index 6c7e5629..fe8af41d 100644
--- a/crlcore/src/ccore/acmsigda/AcmSigdaParserGrammar.yy
+++ b/crlcore/src/ccore/acmsigda/AcmSigdaParserGrammar.yy
@@ -33,11 +33,11 @@ using namespace CRL;
 
 extern char*  yytext;
 extern FILE*  yyin;
-extern int    yylineno;
 extern int    yylex     ();
 extern int    yywrap    ();
 extern void   yyrestart ( FILE* );
 
+int yylineno = 0;
 
 namespace {
 
diff --git a/crlcore/src/ccore/acmsigda/AcmSigdaParserScanner.ll b/crlcore/src/ccore/acmsigda/AcmSigdaParserScanner.ll
index 5d863e3e..bc0a84c8 100644
--- a/crlcore/src/ccore/acmsigda/AcmSigdaParserScanner.ll
+++ b/crlcore/src/ccore/acmsigda/AcmSigdaParserScanner.ll
@@ -7,7 +7,7 @@
 #include  "AcmSigdaParserGrammar.hpp"
 
 static std::string  nameToken;
-       int          yylineno = 0;
+extern int yylineno;
 
 %}