diff --git a/tests/libfixmath_unittests/Makefile b/tests/libfixmath_unittests/Makefile
index d7c734a3ab69cf555a50cc0e98b1cd9306d00fe5..294cc2cc489c59f0695623fb8b9caee8f8149236 100644
--- a/tests/libfixmath_unittests/Makefile
+++ b/tests/libfixmath_unittests/Makefile
@@ -15,6 +15,8 @@ ifneq (,$(filter native,$(BOARD)))
   export LINKFLAGS += -lm
 endif
 
+USEMODULE += printf_float
+
 include $(RIOTBASE)/Makefile.include
 
 test: