Massive constification.
diff --git a/apps/dsa.c b/apps/dsa.c
index f58ff35..1f57c46 100644
--- a/apps/dsa.c
+++ b/apps/dsa.c
@@ -89,7 +89,7 @@
 	int ret=1;
 	DSA *dsa=NULL;
 	int i,badops=0;
-	EVP_CIPHER *enc=NULL;
+	const EVP_CIPHER *enc=NULL;
 	BIO *in=NULL,*out=NULL;
 	int informat,outformat,text=0,noout=0;
 	char *infile,*outfile,*prog;