diff --git a/gnu/lib/libdialog/checklist.c b/gnu/lib/libdialog/checklist.c
index c31a9305903..964a1b67098 100644
--- a/gnu/lib/libdialog/checklist.c
+++ b/gnu/lib/libdialog/checklist.c
@@ -65,10 +65,11 @@ int dialog_checklist(unsigned char *title, unsigned char *prompt, int height, in
 	height = strheight(prompt)+list_height+4+2;
   if (width < 0) {
 	i = strwidth(prompt);
-	j = strwidth(title);
+	j = ((title != NULL) ? strwidth(title) : 0);
 	width = MAX(i,j);
 	width = MAX(width,check_x+4)+4;
   }
+  width = MAX(width,24);
 
   if (width > COLS)
 	width = COLS;
diff --git a/gnu/lib/libdialog/inputbox.c b/gnu/lib/libdialog/inputbox.c
index 61dd2f21248..b69267f1c95 100644
--- a/gnu/lib/libdialog/inputbox.c
+++ b/gnu/lib/libdialog/inputbox.c
@@ -37,9 +37,10 @@ int dialog_inputbox(unsigned char *title, unsigned char *prompt, int height, int
 	height = strheight(prompt)+2+4;
   if (width < 0) {
 	i = strwidth(prompt);
-	j = strwidth(title);
+	j = ((title != NULL) ? strwidth(title) : 0);
 	width = MAX(i,j) + 4;
   }
+  width = MAX(width,24);
 
   if (width > COLS)
 	width = COLS;
diff --git a/gnu/lib/libdialog/menubox.c b/gnu/lib/libdialog/menubox.c
index ed82ae5670b..22c7bc0285e 100644
--- a/gnu/lib/libdialog/menubox.c
+++ b/gnu/lib/libdialog/menubox.c
@@ -55,10 +55,11 @@ int dialog_menu(unsigned char *title, unsigned char *prompt, int height, int wid
 	height = strheight(prompt)+menu_height+4+2;
   if (width < 0) {
 	i = strwidth(prompt);
-	j = strwidth(title);
+	j = ((title != NULL) ? strwidth(title) : 0);
 	width = MAX(i,j);
 	width = MAX(width,tag_x+4)+4;
   }
+  width = MAX(width,24);
 
   if (width > COLS)
 	width = COLS;
diff --git a/gnu/lib/libdialog/msgbox.c b/gnu/lib/libdialog/msgbox.c
index 50f6c13b205..f8ca26fc557 100644
--- a/gnu/lib/libdialog/msgbox.c
+++ b/gnu/lib/libdialog/msgbox.c
@@ -36,9 +36,11 @@ int dialog_msgbox(unsigned char *title, unsigned char *prompt, int height, int w
 	height = strheight(prompt)+2+2*(!!pause);
   if (width < 0) {
 	i = strwidth(prompt);
-	j = strwidth(title);
+	j = ((title != NULL) ? strwidth(title) : 0);
 	width = MAX(i,j)+4;
   }
+  if (pause)
+	width = MAX(width,10);
 
   if (width > COLS)
 	width = COLS;
diff --git a/gnu/lib/libdialog/prgbox.c b/gnu/lib/libdialog/prgbox.c
index 53275bfd704..f2c7c6a5fb9 100644
--- a/gnu/lib/libdialog/prgbox.c
+++ b/gnu/lib/libdialog/prgbox.c
@@ -39,6 +39,8 @@ int dialog_prgbox(unsigned char *title, const unsigned char *line, int height, i
     fprintf(stderr, "\nAutosizing is impossible in dialog_prgbox().\n");
     exit(-1);
   }
+  width = MAX(width,10);
+
   if (width > COLS)
 	width = COLS;
   if (height > LINES)
diff --git a/gnu/lib/libdialog/radiolist.c b/gnu/lib/libdialog/radiolist.c
index 5b8a68fff56..417f2ab556a 100644
--- a/gnu/lib/libdialog/radiolist.c
+++ b/gnu/lib/libdialog/radiolist.c
@@ -73,10 +73,11 @@ int dialog_radiolist(unsigned char *title, unsigned char *prompt, int height, in
 	height = strheight(prompt)+list_height+4+2;
   if (width < 0) {
 	i = strwidth(prompt);
-	j = strwidth(title);
+	j = ((title != NULL) ? strwidth(title) : 0);
 	width = MAX(i,j);
 	width = MAX(width,check_x+4)+4;
   }
+  width = MAX(width,24);
 
   if (width > COLS)
 	width = COLS;
diff --git a/gnu/lib/libdialog/yesno.c b/gnu/lib/libdialog/yesno.c
index 8d253608e6b..20799b65653 100644
--- a/gnu/lib/libdialog/yesno.c
+++ b/gnu/lib/libdialog/yesno.c
@@ -35,9 +35,10 @@ int dialog_yesno(unsigned char *title, unsigned char * prompt, int height, int w
 	height = strheight(prompt)+4;
   if (width < 0) {
 	i = strwidth(prompt);
-	j = strwidth(title);
+	j = ((title != NULL) ? strwidth(title) : 0);
 	width = MAX(i,j)+4;
   }
+  width = MAX(width,23);
 
   if (width > COLS)
 	width = COLS;