diff --git a/README.md b/README.md
index ca3f44b..f838666 100644
--- a/README.md
+++ b/README.md
@@ -11,7 +11,7 @@ A guide for astronauts (now, programmers using Git) about what to do when things
 
 > NASA has been capturing our missteps, disasters and solutions since the early 1960s, when Mercury-era ground teams first started gathering "lessons learned" into a compendium that now lists thousands of problematic situations, from engine failure to busted hatch handles to computer glitches, and their solutions.
 
-— Chris Hadfield, *An Astronaut's Guide to Life*.
+— Chris Hadfield, *An Astronaut's Guide to Life on Earth*.
 
 #### Conventions for this document