diff --git a/src/Makefile b/src/Makefile
index 4e479ae5..9f7d28ce 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -238,6 +238,9 @@ else
 ifneq (,$(findstring LJ_TARGET_ARM ,$(TARGET_TESTARCH)))
   TARGET_LJARCH= arm
 else
+ifneq (,$(findstring LJ_TARGET_S390 ,$(TARGET_TESTARCH)))
+  TARGET_LJARCH= s390
+else
 ifneq (,$(findstring LJ_TARGET_ARM64 ,$(TARGET_TESTARCH)))
   TARGET_LJARCH= arm64
 else