diff --git a/build_opts/SPARC_FS b/build_opts/SPARC_FS
index 59d17eee9b..7c8bda0ceb 100644
--- a/build_opts/SPARC_FS
+++ b/build_opts/SPARC_FS
@@ -1,2 +1,3 @@
 TARGET_ISA = 'sparc'
+CPU_MODELS = 'AtomicSimpleCPU,TimingSimpleCPU'
 FULL_SYSTEM = 1
diff --git a/build_opts/SPARC_SE b/build_opts/SPARC_SE
index 3b256fc347..62b6841ad4 100644
--- a/build_opts/SPARC_SE
+++ b/build_opts/SPARC_SE
@@ -1,2 +1,3 @@
 TARGET_ISA = 'sparc'
+CPU_MODELS = 'AtomicSimpleCPU,TimingSimpleCPU'
 FULL_SYSTEM = 0