diff --git a/src/customers.h b/src/customers.h
index 353551b..7f20713 100644
--- a/src/customers.h
+++ b/src/customers.h
@@ -26,7 +26,7 @@
 
 void customer_processes( int );
 void select_customers( int, char** );
-void delete_customer();
+void delete_customer( int, char** );
 void add_customer();
 void write_customer_csv_entry( char*, char*, char*, char* );
 void delete_customer_csv_entry( int* );
diff --git a/src/isaac_rand/isaac_rand.c b/src/isaac_rand/isaac_rand.c
index c9220e0..e2dbbcd 100644
--- a/src/isaac_rand/isaac_rand.c
+++ b/src/isaac_rand/isaac_rand.c
@@ -25,8 +25,7 @@ MODIFIED:
   *(r++) = b = ind(mm,y>>RANDSIZL) + x; \
 }
 
-void     isaac(ctx)
-randctx *ctx;
+void isaac(randctx *ctx)
 {
    register ub4 a,b,x,y,*m,*mm,*m2,*r,*mend;
    mm=ctx->randmem; 
@@ -64,9 +63,7 @@ randctx *ctx;
 }
 
 /* if (flag==TRUE), then use the contents of randrsl[] to initialize mm[]. */
-void randinit(ctx, flag)
-randctx *ctx;
-word     flag;
+void randinit(randctx *ctx, word flag)
 {
    word i;
    ub4 a,b,c,d,e,f,g,h;
diff --git a/src/isaac_rand/isaac_rand.h b/src/isaac_rand/isaac_rand.h
index 167a2fd..fa66b6b 100644
--- a/src/isaac_rand/isaac_rand.h
+++ b/src/isaac_rand/isaac_rand.h
@@ -32,10 +32,9 @@ typedef  struct randctx  randctx;
  If (flag==TRUE), then use the contents of randrsl[0..RANDSIZ-1] as the seed.
 ------------------------------------------------------------------------------
 */
-void randinit(/*_ randctx *r, word flag _*/);
-
-void isaac(/*_ randctx *r _*/);
+void randinit(randctx *r, word flag);
 
+void isaac(randctx *r);
 
 /*
 ------------------------------------------------------------------------------