diff --git a/iwyu/run_iwyu.sh b/iwyu/run_iwyu.sh
index 6139ebec8..8456240a9 100755
--- a/iwyu/run_iwyu.sh
+++ b/iwyu/run_iwyu.sh
@@ -10,5 +10,6 @@ IWYU=${IWYU:-iwyu}
 
 cd "$SOURCEDIR" || exit
 
+./configure CC=clang CXX=clang++ --enable-silent-rules
 make clean
 make -k -s CC="$IWYU" CFLAGS="-Xiwyu --no_comments -Xiwyu --no_fwd_decl -Xiwyu --mapping_file='$SCRIPTDIR/htop.imp' $PKG_NL3"