diff --git a/barcode/barcode.h b/barcode/barcode.h

index ed90e0c..ff7b8b4 100644

--- a/barcode/barcode.h

+++ b/barcode/barcode.h

@@ -123,6 +123,6 @@ extern int Barcode_Version(char *versionname);

 }

 #endif

-int streaming;

+extern int streaming;

 #endif /* _BARCODE_H_ */

diff --git a/barcode/library.c b/barcode/library.c

index 30946ff..5390a2b 100644

--- a/barcode/library.c

+++ b/barcode/library.c

@@ -30,6 +30,8 @@

 #endif

 #include <errno.h>

+int streaming;

+

 /*

  * This function allocates a barcode structure and strdup()s the

  * text string. It returns NULL in case of error