diff --git a/lib/Format/UnwrappedLineFormatter.cpp b/lib/Format/UnwrappedLineFormatter.cpp
index 9753c24..4c341aa 100644
--- a/lib/Format/UnwrappedLineFormatter.cpp
+++ b/lib/Format/UnwrappedLineFormatter.cpp
@@ -62,7 +62,7 @@
       Indent = Line.Level * IndentWidth + AdditionalIndent;
     } else {
       IndentForLevel.resize(Line.Level + 1);
-      Indent = getIndent(IndentForLevel, Line.Level);
+      Indent = getIndent(Line.Level);
     }
     if (static_cast<int>(Indent) + Offset >= 0)
       Indent += Offset;
@@ -118,12 +118,12 @@
   /// \p IndentForLevel must contain the indent for the level \c l
   /// at \p IndentForLevel[l], or a value < 0 if the indent for
   /// that level is unknown.
-  unsigned getIndent(ArrayRef<int> IndentForLevel, unsigned Level) {
+  unsigned getIndent(unsigned Level) const {
     if (IndentForLevel[Level] != -1)
       return IndentForLevel[Level];
     if (Level == 0)
       return 0;
-    return getIndent(IndentForLevel, Level - 1) + Style.IndentWidth;
+    return getIndent(Level - 1) + Style.IndentWidth;
   }
 
   const FormatStyle &Style;