diff --git a/include/llvm/ADT/APInt.h b/include/llvm/ADT/APInt.h
index ab2363bfb93..3bbd5278e96 100644
--- a/include/llvm/ADT/APInt.h
+++ b/include/llvm/ADT/APInt.h
@@ -1125,13 +1125,13 @@ public:
   /// Considers the APInt to be unsigned and converts it into a string in the
   /// radix given. The radix can be 2, 8, 10 or 16.
   void toStringUnsigned(SmallVectorImpl<char> &Str, unsigned Radix = 10) const {
-    return toString(Str, Radix, false);
+    toString(Str, Radix, false);
   }
 
   /// Considers the APInt to be signed and converts it into a string in the
   /// radix given. The radix can be 2, 8, 10 or 16.
   void toStringSigned(SmallVectorImpl<char> &Str, unsigned Radix = 10) const {
-    return toString(Str, Radix, true);
+    toString(Str, Radix, true);
   }
 
   /// toString - This returns the APInt as a std::string.  Note that this is an
diff --git a/include/llvm/ADT/APSInt.h b/include/llvm/ADT/APSInt.h
index 6fef4c7a0d0..7e7d1c398f2 100644
--- a/include/llvm/ADT/APSInt.h
+++ b/include/llvm/ADT/APSInt.h
@@ -59,7 +59,7 @@ public:
 
   /// toString - Append this APSInt to the specified SmallString.
   void toString(SmallVectorImpl<char> &Str, unsigned Radix = 10) const {
-    return APInt::toString(Str, Radix, isSigned());
+    APInt::toString(Str, Radix, isSigned());
   }
   /// toString - Converts an APInt to a std::string.  This is an inefficient
   /// method, your should prefer passing in a SmallString instead.