diff --git a/python-kiwisolver.changes b/python-kiwisolver.changes
index 8896357..509f92a 100644
--- a/python-kiwisolver.changes
+++ b/python-kiwisolver.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Wed Mar 28 15:28:16 UTC 2018 - jengelh@inai.de
+
+- Quantify speeds in description.
+
 -------------------------------------------------------------------
 Fri Mar 23 12:00:31 UTC 2018 - tchvatal@suse.com
 
diff --git a/python-kiwisolver.spec b/python-kiwisolver.spec
index 950bd05..bcb43ac 100644
--- a/python-kiwisolver.spec
+++ b/python-kiwisolver.spec
@@ -20,7 +20,7 @@
 Name:           python-kiwisolver
 Version:        1.0.1
 Release:        0
-Summary:        A fast implementation of the Cassowary constraint solver
+Summary:        An implementation of the Cassowary constraint solver
 License:        BSD-3-Clause
 Group:          Development/Languages/Python
 Url:            https://github.com/nucleic/kiwi
@@ -35,12 +35,12 @@ BuildRequires:  python-rpm-macros
 %python_subpackages
 
 %description
-Kiwi is an efficient C++ implementation of the Cassowary constraint solving
-algorithm. Kiwi is an implementation of the algorithm based on the seminal
-Cassowary paper. It is *not* a refactoring of the original C++ solver. Kiwi
-has been designed from the ground up to be lightweight and fast. Kiwi ranges
-from 10x to 500x faster than the original Cassowary solver with typical use
-cases gaining a 40x improvement. Memory savings are consistently > 5x.
+Kiwi is a C++ implementation of the Cassowary constraint solving
+algorithm. Kiwi is an implementation of the algorithm based on the
+seminal Cassowary paper, but it is not a refactoring of the original
+C++ solver. Kiwi ranges from 10x to 500x faster processing than the
+original Cassowary solver with the same input set, with typical use
+cases gaining a 40x improvement. Memory savings are consistently >5x.
 
 In addition to the C++ solver, Kiwi ships with hand-rolled Python bindings.