diff --git a/debug-ghc b/debug-ghc
index 2ee8a91f2849cf9a89c061a0a8f971f2d80b42af..53e4ab52ae58d35217640566dc5c5b8fc3cb2c6e 100755
--- a/debug-ghc
+++ b/debug-ghc
@@ -1,5 +1,8 @@
 #!/usr/bin/env bash
 
+# This is a handy wrapper script for invoking GDB (and other tools) on
+# the wrapper scripts generated by GHC's build system.
+
 set -x
 
 if [ -z "$PROG" ]; then