diff --git a/README.md b/README.md
index 9c92bbf..e5b42be 100644
--- a/README.md
+++ b/README.md
@@ -10,7 +10,7 @@ The reason why it is slow is because it parses the given format at run-time.
 
 qrintf is a preprocessor (and a set of runtime functions) that precompiles invocations of sprintf (and snprintf) with constant format strings into specialized forms.
 
-The benchmark below shows the power of qrintf; converting IPv4 address to string becomes 13x faster when the preprocessor is applied to the source code.
+The benchmark below shows the power of qrintf; converting IPv4 address to string becomes more than 10x faster when the preprocessor is applied to the source code.
 
 ```
 $ gcc -O2 examples/ipv4addr.c