diff --git a/src/dfmt/formatter.d b/src/dfmt/formatter.d
index 1847cbc..d68e55e 100644
--- a/src/dfmt/formatter.d
+++ b/src/dfmt/formatter.d
@@ -154,7 +154,8 @@ private:
             {
                 immutable t = tokens[index].type;
                 if (t == tok!"identifier" || isStringLiteral(t)
-                        || isNumberLiteral(t) || t == tok!"characterLiteral")
+                        || isNumberLiteral(t) || t == tok!"characterLiteral"
+                        || isKeyword(t))
                     write(" ");
             }
         }
diff --git a/tests/allman/issue0128.d.ref b/tests/allman/issue0128.d.ref
new file mode 100644
index 0000000..cba3197
--- /dev/null
+++ b/tests/allman/issue0128.d.ref
@@ -0,0 +1,5 @@
+unittest
+{
+    string[string] aa = ["a" : "b"];
+    auto x = "a" in aa;
+}
diff --git a/tests/issue0128.d b/tests/issue0128.d
new file mode 100644
index 0000000..96e718e
--- /dev/null
+++ b/tests/issue0128.d
@@ -0,0 +1,5 @@
+unittest
+{
+	string[string] aa = ["a":"b"];
+	auto x = "a" in aa;
+}
diff --git a/tests/otbs/issue0128.d.ref b/tests/otbs/issue0128.d.ref
new file mode 100644
index 0000000..0b1261c
--- /dev/null
+++ b/tests/otbs/issue0128.d.ref
@@ -0,0 +1,4 @@
+unittest {
+    string[string] aa = ["a" : "b"];
+    auto x = "a" in aa;
+}