diff --git a/src/cryptsetup.h b/src/cryptsetup.h
index 17c2e962..aa908e7f 100644
--- a/src/cryptsetup.h
+++ b/src/cryptsetup.h
@@ -69,7 +69,7 @@ void clogger(struct crypt_device *cd, int level, const char *file, int line,
 void tool_log(int level, const char *msg, void *usrptr __attribute__((unused)));
 void quiet_log(int level, const char *msg, void *usrptr);
 
-int yesDialog(const char *msg, void *usrptr __attribute__((unused)));
+int yesDialog(const char *msg, void *usrptr);
 void show_status(int errcode);
 const char *uuid_or_device(const char *spec);
 __attribute__ ((noreturn)) \
diff --git a/src/utils_tools.c b/src/utils_tools.c
index ef361cbd..3c35e6ce 100644
--- a/src/utils_tools.c
+++ b/src/utils_tools.c
@@ -128,12 +128,12 @@ void quiet_log(int level, const char *msg, void *usrptr)
 	tool_log(level, msg, usrptr);
 }
 
-int yesDialog(const char *msg, void *usrptr)
+static int _dialog(const char *msg, void *usrptr, int default_answer)
 {
 	const char *fail_msg = (const char *)usrptr;
 	char *answer = NULL;
 	size_t size = 0;
-	int r = 1, block;
+	int r = default_answer, block;
 
 	block = tools_signals_blocked();
 	if (block)
@@ -150,9 +150,9 @@ int yesDialog(const char *msg, void *usrptr)
 				log_err(_("Error reading response from terminal."));
 			else
 				log_dbg("Query interrupted on signal.");
-		} else if (strcmp(answer, "YES\n")) {
-			r = 0;
-			if (fail_msg)
+		} else {
+			r = !strcmp(answer, "YES\n");
+			if (!r && fail_msg)
 				log_err("%s", fail_msg);
 		}
 	}
@@ -164,6 +164,11 @@ int yesDialog(const char *msg, void *usrptr)
 	return r;
 }
 
+int yesDialog(const char *msg, void *usrptr)
+{
+	return _dialog(msg, usrptr, 1);
+}
+
 void show_status(int errcode)
 {
 	char *crypt_error;