diff --git a/configure.ac b/configure.ac
index 3f0254a2ab7e..22c2099c3ae6 100644
--- a/configure.ac
+++ b/configure.ac
@@ -450,7 +450,7 @@
           [
             AS_IF([test "$CLANG" != no],
                   [
-                    llc_candidates=$($CLANG --version | \
+                    llc_candidates=$($CLANG --version | sed -e 's/.*clang version/clang version/' | \
                       awk '/^clang version/ {
                              split($3, v, ".");
                              printf("llc-%s.%s llc-%s llc", v[[1]], v[[2]], v[[1]])