diff --git a/build.sh b/build.sh
index 117b702a8..6622d5f92 100755
--- a/build.sh
+++ b/build.sh
@@ -595,7 +595,7 @@ mkdir -p $BUILD
 . $(dirname $(which $0))/version.sh
 
 # qmake needs absolute paths, so we get them now:
-#   OSX does not have `readlink -f` command. Use equivalent Perl script.
+#   OSX does not have `realpath --canonicalize-existing` command. Use equivalent Perl script.
 if [ "$IS_MAC" = "no" ]; then
   BUILD=`realpath --canonicalize-existing $BUILD`
   BIN=`realpath --canonicalize-existing $BIN`