diff --git a/CHANGELOG.md b/CHANGELOG.md
index 137957f3..e68a3160 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,9 @@
 
 ## Current
 
+## Bug
+- On Unix system, fallback to {80,25} screen dimension on failure.
+
 ## 0.10 (2021-09-30)
 
 ## Bug
diff --git a/src/ftxui/screen/terminal.cpp b/src/ftxui/screen/terminal.cpp
index 5f02fc02..42497846 100644
--- a/src/ftxui/screen/terminal.cpp
+++ b/src/ftxui/screen/terminal.cpp
@@ -33,8 +33,11 @@ Dimensions Terminal::Size() {
   return Dimensions{80, 80};
 
 #else
-  winsize w;
+  winsize w{};
   ioctl(STDOUT_FILENO, TIOCGWINSZ, &w);
+  if (w.ws_col == 0 || w.ws_row == 0) {
+    return Dimensions{80, 25};
+  }
   return Dimensions{w.ws_col, w.ws_row};
 #endif
 }