diff --git a/src/target.cpp b/src/target.cpp
index 346772ce1..8b533f4af 100644
--- a/src/target.cpp
+++ b/src/target.cpp
@@ -686,6 +686,8 @@ const char *target_subarch_name(ZigLLVM_SubArchType subarch) {
             return "v8m_baseline";
         case ZigLLVM_ARMSubArch_v8m_mainline:
             return "v8m_mainline";
+        case ZigLLVM_ARMSubArch_v8_1m_mainline:
+            return "v8_1m_mainline";
         case ZigLLVM_ARMSubArch_v7:
             return "v7";
         case ZigLLVM_ARMSubArch_v7em: