diff --git a/lib/Target/PowerPC/PPC.td b/lib/Target/PowerPC/PPC.td
index 4dc1ebb8c1a..13d3f31d6f3 100644
--- a/lib/Target/PowerPC/PPC.td
+++ b/lib/Target/PowerPC/PPC.td
@@ -90,7 +90,7 @@ def FeatureLDBRX     : SubtargetFeature<"ldbrx","HasLDBRX", "true",
                                         "Enable the ldbrx instruction">;
 def FeatureBookE     : SubtargetFeature<"booke", "IsBookE", "true",
                                         "Enable Book E instructions">;
-def FeatureE500      : SubtargetFeature<"E500", "IsE500", "true",
+def FeatureE500      : SubtargetFeature<"e500", "IsE500", "true",
                                         "Enable E500/E500mc instructions">;
 def FeaturePPC4xx    : SubtargetFeature<"ppc4xx", "IsPPC4xx", "true",
                                         "Enable PPC 4xx instructions">;