diff --git a/tests/sys/psa_crypto_ecdsa/Makefile b/tests/sys/psa_crypto_ecdsa/Makefile
index 0eb1e488a4bc..2f00387a9131 100644
--- a/tests/sys/psa_crypto_ecdsa/Makefile
+++ b/tests/sys/psa_crypto_ecdsa/Makefile
@@ -13,6 +13,12 @@ USEMODULE += psa_asymmetric_ecc_p256r1
 CFLAGS += -DCONFIG_PSA_ASYMMETRIC_KEYPAIR_COUNT=1
 CFLAGS += -DCONFIG_PSA_SINGLE_KEY_COUNT=1
 
-CFLAGS += -DTHREAD_STACKSIZE_MAIN=7000
+ifneq (,$(filter psa_asymmetric_ecc_p256r1_backend_microecc,$(USEMODULE)))
+  CFLAGS += -DTHREAD_STACKSIZE_MAIN=4096
+endif
+
+ifneq (,$(filter psa_asymmetric_ecc_p256r1_backend_periph,$(USEMODULE)))
+  CFLAGS += -DTHREAD_STACKSIZE_MAIN=7000
+endif
 
 include $(RIOTBASE)/Makefile.include
diff --git a/tests/sys/psa_crypto_ecdsa/Makefile.ci b/tests/sys/psa_crypto_ecdsa/Makefile.ci
index 6a2fca3cafc6..04da97e287d4 100644
--- a/tests/sys/psa_crypto_ecdsa/Makefile.ci
+++ b/tests/sys/psa_crypto_ecdsa/Makefile.ci
@@ -6,9 +6,7 @@ BOARD_INSUFFICIENT_MEMORY := \
     atmega328p \
     atmega328p-xplained-mini \
     atmega8 \
-    nucleo-f031k6 \
     nucleo-l011k4 \
     samd10-xmini \
-    stk3200 \
     stm32f030f4-demo \
     #