diff --git a/tests/driver_tmp006/Makefile b/tests/driver_tmp006/Makefile
index 4b4a803813..9f191c7cad 100644
--- a/tests/driver_tmp006/Makefile
+++ b/tests/driver_tmp006/Makefile
@@ -6,20 +6,14 @@ FEATURES_REQUIRED = periph_i2c
 USEMODULE += tmp006
 USEMODULE += xtimer
 
-ifneq (,$(TEST_TMP006_I2C))
-  CFLAGS += -DTEST_TMP006_I2C=$(TEST_TMP006_I2C)
-else
-  CFLAGS += -DTEST_TMP006_I2C=I2C_0
-endif
-ifneq (,$(TEST_TMP006_ADDR))
-  CFLAGS += -DTEST_TMP006_ADDR=$(TEST_TMP006_ADDR)
-else
-  CFLAGS += -DTEST_TMP006_ADDR=0x41
-endif
-ifneq (,$(TEST_TMP006_CONFIG_CR))
-  CFLAGS += -DTEST_TMP006_CONFIG_CR=$(TEST_TMP006_CONFIG_CR)
-else
-  CFLAGS += -DTEST_TMP006_CONFIG_CR=TMP006_CONFIG_CR_DEF
-endif
+# set default device parameters in case they are undefined
+TEST_TMP006_I2C       ?= I2C_0
+TEST_TMP006_ADDR      ?= 0x41
+TEST_TMP006_CONFIG_CR ?= TMP006_CONFIG_CR_DEF
+
+# export parameters
+CFLAGS += -DTEST_TMP006_I2C=$(TEST_TMP006_I2C)
+CFLAGS += -DTEST_TMP006_ADDR=$(TEST_TMP006_ADDR)
+CFLAGS += -DTEST_TMP006_CONFIG_CR=$(TEST_TMP006_CONFIG_CR)
 
 include $(RIOTBASE)/Makefile.include