diff --git a/cmdgen.c b/cmdgen.c
index 9d9d011a..774a42c7 100644
--- a/cmdgen.c
+++ b/cmdgen.c
@@ -46,7 +46,7 @@ char *get_random_data(int len, const char *device)
 #define console_get_userpass_input console_get_userpass_input_diagnostic
 int nprompts, promptsgot;
 const char *prompts[3];
-int console_get_userpass_input(prompts_t *p, unsigned char *in, int inlen)
+int console_get_userpass_input(prompts_t *p)
 {
     size_t i;
     int ret = 1;
@@ -785,7 +785,7 @@ int main(int argc, char **argv)
 		p->to_server = FALSE;
 		p->name = dupstr("SSH key passphrase");
 		add_prompt(p, dupstr("Enter passphrase to load key: "), FALSE);
-		ret = console_get_userpass_input(p, NULL, 0);
+		ret = console_get_userpass_input(p);
 		assert(ret >= 0);
 		if (!ret) {
 		    free_prompts(p);
@@ -932,7 +932,7 @@ int main(int argc, char **argv)
 	p->name = dupstr("New SSH key passphrase");
 	add_prompt(p, dupstr("Enter passphrase to save key: "), FALSE);
 	add_prompt(p, dupstr("Re-enter passphrase to verify: "), FALSE);
-	ret = console_get_userpass_input(p, NULL, 0);
+	ret = console_get_userpass_input(p);
 	assert(ret >= 0);
 	if (!ret) {
 	    free_prompts(p);
diff --git a/putty.h b/putty.h
index 98a23591..12499e87 100644
--- a/putty.h
+++ b/putty.h
@@ -1367,8 +1367,7 @@ int askappend(void *frontend, Filename *filename,
  * that aren't equivalents to things in windlg.c et al.
  */
 extern int console_batch_mode;
-int console_get_userpass_input(prompts_t *p, const unsigned char *in,
-                               int inlen);
+int console_get_userpass_input(prompts_t *p);
 void console_provide_logctx(void *logctx);
 int is_interactive(void);
 
diff --git a/unix/uxcons.c b/unix/uxcons.c
index 716f3fc5..d0fe986b 100644
--- a/unix/uxcons.c
+++ b/unix/uxcons.c
@@ -456,8 +456,7 @@ static void console_prompt_text(FILE *outfp, const char *data, int len)
     fflush(outfp);
 }
 
-int console_get_userpass_input(prompts_t *p, const unsigned char *in,
-                               int inlen)
+int console_get_userpass_input(prompts_t *p)
 {
     size_t curr_prompt;
     FILE *outfp = NULL;
diff --git a/unix/uxpgnt.c b/unix/uxpgnt.c
index 63605fb6..d3f5648e 100644
--- a/unix/uxpgnt.c
+++ b/unix/uxpgnt.c
@@ -351,7 +351,7 @@ static char *askpass_tty(const char *prompt)
     p->to_server = FALSE;
     p->name = dupstr("Pageant passphrase prompt");
     add_prompt(p, dupcat(prompt, ": ", (const char *)NULL), FALSE);
-    ret = console_get_userpass_input(p, NULL, 0);
+    ret = console_get_userpass_input(p);
     assert(ret >= 0);
 
     if (!ret) {
diff --git a/unix/uxplink.c b/unix/uxplink.c
index 93c12b22..765aadcc 100644
--- a/unix/uxplink.c
+++ b/unix/uxplink.c
@@ -437,7 +437,7 @@ int get_userpass_input(prompts_t *p, const unsigned char *in, int inlen)
     int ret;
     ret = cmdline_get_passwd_input(p, in, inlen);
     if (ret == -1)
-	ret = console_get_userpass_input(p, in, inlen);
+	ret = console_get_userpass_input(p);
     return ret;
 }
 
diff --git a/unix/uxsftp.c b/unix/uxsftp.c
index 56f7a136..8576d436 100644
--- a/unix/uxsftp.c
+++ b/unix/uxsftp.c
@@ -73,7 +73,7 @@ int get_userpass_input(prompts_t *p, const unsigned char *in, int inlen)
     int ret;
     ret = cmdline_get_passwd_input(p, in, inlen);
     if (ret == -1)
-	ret = console_get_userpass_input(p, in, inlen);
+	ret = console_get_userpass_input(p);
     return ret;
 }
 
diff --git a/windows/wincons.c b/windows/wincons.c
index efdecd58..5c493773 100644
--- a/windows/wincons.c
+++ b/windows/wincons.c
@@ -355,8 +355,7 @@ static void console_data_untrusted(HANDLE hout, const char *data, int len)
     WriteFile(hout, data, len, &dummy, NULL);
 }
 
-int console_get_userpass_input(prompts_t *p,
-                               const unsigned char *in, int inlen)
+int console_get_userpass_input(prompts_t *p)
 {
     HANDLE hin, hout;
     size_t curr_prompt;