diff --git a/CHANGES b/CHANGES
index 7e2d151..53f43db 100755
--- a/CHANGES
+++ b/CHANGES
@@ -22,6 +22,7 @@ SafeFormat:
     - speed comparison added (pk)
     - 64 bit problems fixed (Thanks to Zak Kipling)
     - ported to 64-bit Windows, not tested (pk)
+    - Printf/SPrintfing of std::strings added
 
 SmallObject:
     - added functions to check for memory corruption (rs)
diff --git a/include/loki/SafeFormat.h b/include/loki/SafeFormat.h
index 29b14ef..9a3bcaf 100755
--- a/include/loki/SafeFormat.h
+++ b/include/loki/SafeFormat.h
@@ -166,6 +166,10 @@ namespace Loki
             return StoreCountHelper(pi);
         }
         
+        PrintfState& operator()(const std::string& stdstr) {
+            return operator()(stdstr.c_str());
+        }
+
         PrintfState& operator()(const char *const s) {
             if (result_ == -1) return *this;
             ReadLeaders();