diff --git a/llvm/utils/release/test-release.sh b/llvm/utils/release/test-release.sh
index 0af16387ce1d8..4314b565e11b0 100755
--- a/llvm/utils/release/test-release.sh
+++ b/llvm/utils/release/test-release.sh
@@ -532,9 +532,9 @@ function build_llvmCore() {
       BuildTarget="clang"
       InstallTarget="install-clang install-clang-resource-headers"
       # compiler-rt builtins is needed on AIX to have a functional Phase 1 clang.
-      if [ "$System" = "AIX" -o "$Phase" != "1" ]; then
+      if [ "$System" = "AIX" ]; then
         BuildTarget="$BuildTarget runtimes"
-        InstallTarget="$InstallTarget install-runtimes"
+        InstallTarget="$InstallTarget install-builtins"
       fi
     fi
     if [ "$Phase" -eq "3" ]; then