diff --git a/src/asn1Decoding.c b/src/asn1Decoding.c

index 098ab9e..d1f3723 100644

--- a/src/asn1Decoding.c

+++ b/src/asn1Decoding.c

@@ -193,7 +193,7 @@ main (int argc, char *argv[])

   {

-    size_t tmplen;

+    size_t tmplen = 0;

     der = (unsigned char *) read_file (inputFileDerName, RF_BINARY, &tmplen);

     der_len = tmplen;

   }