diff --git a/tools/gn/escape.cc b/tools/gn/escape.cc
index 84928ef..685a100 100644
--- a/tools/gn/escape.cc
+++ b/tools/gn/escape.cc
@@ -27,7 +27,7 @@
 //  `  a  b  c  d  e  f  g  h  i  j  k  l  m  n  o
     0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
 //  p  q  r  s  t  u  v  w  x  y  z  {  |  }  ~
-    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 0, 0 };
+    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0 };
 
 // Append one character to the given string, escaping it for Ninja.
 //
diff --git a/tools/gn/escape_unittest.cc b/tools/gn/escape_unittest.cc
index f2b2eae..fc7692d 100644
--- a/tools/gn/escape_unittest.cc
+++ b/tools/gn/escape_unittest.cc
@@ -49,6 +49,10 @@
 
   // Some more generic shell chars.
   EXPECT_EQ("a_\\;\\<\\*b", EscapeString("a_;<*b", opts, nullptr));
+
+  // Curly braces must be escaped to avoid brace expansion on systems using
+  // bash as default shell..
+  EXPECT_EQ("\\{a,b\\}\\{c,d\\}", EscapeString("{a,b}{c,d}", opts, nullptr));
 }
 
 TEST(Escape, NinjaPreformatted) {