diff --git a/lib/cookie.c b/lib/cookie.c
index 41a366d2da217ac068f7e198eefd85d302e87a49..4a33845ab7a027a5b72bc63b9a57800581a6ba60 100644
--- a/lib/cookie.c
+++ b/lib/cookie.c
@@ -188,6 +188,10 @@ Curl_cookie_add(struct SessionHandle *data,
   bool replace_old = FALSE;
   bool badcookie = FALSE; /* cookies are good by default. mmmmm yummy */
 
+#ifdef CURL_DISABLE_VERBOSE_STRINGS
+  (void)data;
+#endif
+
   /* First, alloc and init a new struct for it */
   co = (struct Cookie *)calloc(sizeof(struct Cookie), 1);
   if(!co)
diff --git a/lib/ftp.c b/lib/ftp.c
index d0c69f243a3685caf195876eb8b6ec06e9814c32..51bd164115ef8a6a0737096ba6def71b8f076b70 100644
--- a/lib/ftp.c
+++ b/lib/ftp.c
@@ -109,16 +109,22 @@
 #define NIFLAGS NI_NUMERICHOST | NI_NUMERICSERV
 #endif
 
+#ifdef CURL_DISABLE_VERBOSE_STRINGS
+#define ftp_pasv_verbose(a,b,c,d)  do { } while (0)
+#endif
+
 /* Local API functions */
 static CURLcode ftp_sendquote(struct connectdata *conn,
                               struct curl_slist *quote);
 static CURLcode ftp_quit(struct connectdata *conn);
 static CURLcode ftp_parse_url_path(struct connectdata *conn);
 static CURLcode ftp_regular_transfer(struct connectdata *conn, bool *done);
+#ifndef CURL_DISABLE_VERBOSE_STRINGS
 static void ftp_pasv_verbose(struct connectdata *conn,
                              Curl_addrinfo *ai,
                              char *newhost, /* ascii version */
                              int port);
+#endif
 static CURLcode ftp_state_post_rest(struct connectdata *conn);
 static CURLcode ftp_state_post_cwd(struct connectdata *conn);
 static CURLcode ftp_state_quote(struct connectdata *conn,
@@ -3238,23 +3244,18 @@ static CURLcode ftp_nb_type(struct connectdata *conn,
  * possibly new IP address.
  *
  */
+#ifndef CURL_DISABLE_VERBOSE_STRINGS
 static void
 ftp_pasv_verbose(struct connectdata *conn,
                  Curl_addrinfo *ai,
                  char *newhost, /* ascii version */
                  int port)
 {
-#ifdef CURL_DISABLE_VERBOSE_STRINGS
-  (void)conn;
-  (void)ai;
-  (void)newhost;
-  (void)port;
-#else
   char buf[256];
   Curl_printable_address(ai, buf, sizeof(buf));
   infof(conn->data, "Connecting to %s (%s) port %d\n", newhost, buf, port);
-#endif
 }
+#endif
 
 /*
   Check if this is a range download, and if so, set the internal variables
diff --git a/lib/ssluse.c b/lib/ssluse.c
index 815289df7f771b908771b0e9c02680f4a2b6cdb7..593f23857d021025423dc61c7d24b6ffd13a19a9 100644
--- a/lib/ssluse.c
+++ b/lib/ssluse.c
@@ -859,6 +859,10 @@ static int Curl_ASN1_UTCTIME_output(struct connectdata *conn,
   int year=0,month=0,day=0,hour=0,minute=0,second=0;
   struct SessionHandle *data = conn->data;
 
+#ifdef CURL_DISABLE_VERBOSE_STRINGS
+  (void)prefix;
+#endif
+
   if(!data->set.verbose)
     return 0;
 
diff --git a/lib/telnet.c b/lib/telnet.c
index 756f358f4fc9cfb9b047e18777101f51b0c3e5a5..621e5f908ea91568dccfcb24bf23d0c8961ac9b4 100644
--- a/lib/telnet.c
+++ b/lib/telnet.c
@@ -95,6 +95,10 @@
 #define  CURL_SB_EOF(x) (x->subpointer >= x->subend)
 #define  CURL_SB_LEN(x) (x->subend - x->subpointer)
 
+#ifdef CURL_DISABLE_VERBOSE_STRINGS
+#define printoption(a,b,c,d)  do { } while (0)
+#endif
+
 #ifdef USE_WINSOCK
 typedef FARPROC WSOCK2_FUNC;
 static CURLcode check_wsock2 ( struct SessionHandle *data );
@@ -105,9 +109,11 @@ void telrcv(struct connectdata *,
             unsigned char *inbuf,       /* Data received from socket */
             ssize_t count);             /* Number of bytes received */
 
+#ifndef CURL_DISABLE_VERBOSE_STRINGS
 static void printoption(struct SessionHandle *data,
                         const char *direction,
                         int cmd, int option);
+#endif
 
 static void negotiate(struct connectdata *);
 static void send_negotiation(struct connectdata *, int cmd, int option);
@@ -244,6 +250,7 @@ static void negotiate(struct connectdata *conn)
   }
 }
 
+#ifndef CURL_DISABLE_VERBOSE_STRINGS
 static void printoption(struct SessionHandle *data,
                         const char *direction, int cmd, int option)
 {
@@ -282,6 +289,7 @@ static void printoption(struct SessionHandle *data,
     }
   }
 }
+#endif
 
 static void send_negotiation(struct connectdata *conn, int cmd, int option)
 {