diff --git a/src/HTAlert.h b/src/HTAlert.h
index 49456c42..9a854fcb 100644
--- a/src/HTAlert.h
+++ b/src/HTAlert.h
@@ -20,7 +20,7 @@
 **      On exit,
 **              Return value is malloc'd string which must be freed.
 */
-extern char * HTPrompt PARAMS((CONST char * Msg, CONST char * deflt));
+extern char * HTPrompt (const char * Msg, const char * deflt);
 
 
 /*      Display a message, don't wait for input
@@ -28,11 +28,11 @@ extern char * HTPrompt PARAMS((CONST char * Msg, CONST char * deflt));
 **      On entry,
 **              The input is a list of parameters for printf.
 */
-extern void HTAlert PARAMS((CONST char * Msg));
-extern void HTAlwaysAlert PARAMS((CONST char * extra_prefix, CONST char * Msg));
-extern void HTInfoMsg PARAMS((CONST char * Msg));
-extern void HTUserMsg PARAMS((CONST char * Msg));
-extern void HTUserMsg2 PARAMS((CONST char * Msg, CONST char * Arg));
+extern void HTAlert (const char * Msg);
+extern void HTAlwaysAlert (const char * extra_prefix, const char * Msg);
+extern void HTInfoMsg (const char * Msg);
+extern void HTUserMsg (const char * Msg);
+extern void HTUserMsg2 (const char * Msg, const char * Arg);
 
 
 /*      Display a progress message for information (and diagnostics) only
@@ -40,21 +40,21 @@ extern void HTUserMsg2 PARAMS((CONST char * Msg, CONST char * Arg));
 **      On entry,
 **              The input is a list of parameters for printf.
 */
-extern CONST char *HTProgressUnits PARAMS((int kilobytes));
-extern void HTProgress PARAMS((CONST char * Msg));
-extern void HTReadProgress PARAMS((long bytes, long total));
+extern const char *HTProgressUnits (int kilobytes);
+extern void HTProgress (const char * Msg);
+extern void HTReadProgress (long bytes, long total);
 #define _HTProgress(msg)	mustshow = TRUE, HTProgress(msg)
 
 /*
  *  Indicates whether last HTConfirm was cancelled (^G or ^C) and
  *  resets flag. (so only call once!) - kw
  */
-extern BOOL HTLastConfirmCancelled NOPARAMS;
+extern BOOL HTLastConfirmCancelled (void);
 
 /*
 **	Supports logic for forced yes/no prompt results.
 */
-extern int HTForcedPrompt PARAMS((int Opt, CONST char * Msg, int Dft));
+extern int HTForcedPrompt (int Opt, const char * Msg, int Dft);
 
 /*      Display a message, then wait for 'yes' or 'no', allowing default
 **	response if a return or left-arrow is used.
@@ -66,7 +66,7 @@ extern int HTForcedPrompt PARAMS((int Opt, CONST char * Msg, int Dft));
 **              If the user enters 'YES', returns TRUE, returns FALSE
 **              otherwise.
 */
-extern int HTConfirmDefault PARAMS ((CONST char * Msg, int Dft));
+extern int HTConfirmDefault (const char * Msg, int Dft);
 
 
 /*      Display a message, then wait for 'yes' or 'no'.
@@ -78,17 +78,17 @@ extern int HTConfirmDefault PARAMS ((CONST char * Msg, int Dft));
 **              If the user enters 'YES', returns TRUE, returns FALSE
 **              otherwise.
 */
-extern BOOL HTConfirm PARAMS ((CONST char * Msg));
+extern BOOL HTConfirm (const char * Msg);
 
-extern BOOL confirm_post_resub PARAMS((
-    CONST char*		address,
-    CONST char*		title,
+extern BOOL confirm_post_resub (
+    const char*		address,
+    const char*		title,
     int			if_imgmap,
-    int			if_file));
+    int			if_file);
 
 /*      Prompt for password without echoing the reply
 */
-extern char * HTPromptPassword PARAMS((CONST char * Msg));
+extern char * HTPromptPassword (const char * Msg);
 
 /*      Prompt both username and password       HTPromptUsernameAndPassword()
 **      ---------------------------------
@@ -111,11 +111,11 @@ extern char * HTPromptPassword PARAMS((CONST char * Msg));
 **      are NOT freed.
 **
 */
-extern void HTPromptUsernameAndPassword PARAMS((
-	CONST char *	Msg,
+extern void HTPromptUsernameAndPassword (
+	const char *	Msg,
 	char **		username,
 	char **		password,
-	BOOL		IsProxy));
+	BOOL		IsProxy);
 
 
 /*	Confirm a cookie operation.			HTConfirmCookie()
@@ -132,11 +132,11 @@ extern void HTPromptUsernameAndPassword PARAMS((
 **	Returns FALSE on cancel,
 **		TRUE if the cookie should be set.
 */
-extern BOOL HTConfirmCookie PARAMS((
+extern BOOL HTConfirmCookie (
 	domain_entry *	dp,
-	CONST char *	server,
-	CONST char *	name,
-	CONST char *	value));
+	const char *	server,
+	const char *	name,
+	const char *	value);
 
 
 /*      Confirm redirection of POST.		HTConfirmPostRedirect()
@@ -150,22 +150,22 @@ extern BOOL HTConfirmCookie PARAMS((
 **	  1 for redirect of POST with content,
 **	303 for redirect as GET without content
 */
-extern int HTConfirmPostRedirect PARAMS((
-	CONST char *	Redirecting_url,
-	int		server_status));
+extern int HTConfirmPostRedirect (
+	const char *	Redirecting_url,
+	int		server_status);
 
 
-extern void LYSleepAlert NOPARAMS;
-extern void LYSleepDebug NOPARAMS;
-extern void LYSleepInfo NOPARAMS;
-extern void LYSleepMsg NOPARAMS;
-extern void LYSleepReplay NOPARAMS;
+extern void LYSleepAlert (void);
+extern void LYSleepDebug (void);
+extern void LYSleepInfo (void);
+extern void LYSleepMsg (void);
+extern void LYSleepReplay (void);
 
 #ifdef HAVE_STRERROR
 #define LYStrerror strerror
 #else
-extern char *LYStrerror PARAMS((
-	int		code));
+extern char *LYStrerror (
+	int		code);
 #endif /* HAVE_STRERROR */
 
 #endif /* HTALERT_H */