diff --git a/clang/lib/Basic/Targets/RISCV.cpp b/clang/lib/Basic/Targets/RISCV.cpp
index a9fef5e..1eb36d1 100644
--- a/clang/lib/Basic/Targets/RISCV.cpp
+++ b/clang/lib/Basic/Targets/RISCV.cpp
@@ -31,7 +31,7 @@
       {{"zero"}, "x0"}, {{"ra"}, "x1"},  {{"sp"}, "x2"},   {{"gp"}, "x3"},
       {{"tp"}, "x4"},   {{"t0"}, "x5"},  {{"t1"}, "x6"},   {{"t2"}, "x7"},
       {{"s0"}, "x8"},   {{"s1"}, "x9"},  {{"a0"}, "x10"},  {{"a1"}, "x11"},
-      {{"a2"}, "x12"},  {{"a3"}, "x13"}, {{"a4"}, "x15"},  {{"a5"}, "x15"},
+      {{"a2"}, "x12"},  {{"a3"}, "x13"}, {{"a4"}, "x14"},  {{"a5"}, "x15"},
       {{"a6"}, "x16"},  {{"a7"}, "x17"}, {{"s2"}, "x18"},  {{"s3"}, "x19"},
       {{"s4"}, "x20"},  {{"s5"}, "x21"}, {{"s6"}, "x22"},  {{"s7"}, "x23"},
       {{"s8"}, "x24"},  {{"s9"}, "x25"}, {{"s10"}, "x26"}, {{"s11"}, "x27"},