diff --git a/tests/pkg_utensor/Makefile b/tests/pkg_utensor/Makefile
index 5b11b80918..b5b6d8e691 100644
--- a/tests/pkg_utensor/Makefile
+++ b/tests/pkg_utensor/Makefile
@@ -10,3 +10,11 @@ USEMODULE += models
 EXTERNAL_MODULE_DIRS += $(CURDIR)/models
 
 include $(RIOTBASE)/Makefile.include
+
+# The application requires a little more stacksize on ARM when building with
+# LLVM
+ifneq (,$(filter arch_arm,$(FEATURES_USED)))
+  ifeq (llvm,$(TOOLCHAIN))
+    CFLAGS += -DTHREAD_STACKSIZE_MAIN=2048
+  endif
+endif