diff --git a/pkg/libfixmath/Makefile b/pkg/libfixmath/Makefile
index 3883ad93f827..bb7164d0fb21 100644
--- a/pkg/libfixmath/Makefile
+++ b/pkg/libfixmath/Makefile
@@ -9,4 +9,4 @@ all: $(filter libfixmath-unittests,$(USEMODULE))
 	$(QQ)"$(MAKE)" -C $(PKG_SOURCE_DIR)/$(PKG_NAME) -f $(CURDIR)/Makefile.$(PKG_NAME)
 
 libfixmath-unittests:
-	$(QQ)"$(MAKE)" -C $(PKG_SOURCE_DIR)/unittests -f $(CURDIR)/Makefile.$(PKG_NAME)-unittests
+	$(QQ)"$(MAKE)" -C $(PKG_SOURCE_DIR)/tests -f $(CURDIR)/Makefile.$(PKG_NAME)-unittests
diff --git a/pkg/libfixmath/Makefile.include b/pkg/libfixmath/Makefile.include
index c85b62aef4ca..c178d16777b4 100644
--- a/pkg/libfixmath/Makefile.include
+++ b/pkg/libfixmath/Makefile.include
@@ -14,5 +14,6 @@ CFLAGS += $(libfixmath_options:CONFIG_FIXMATH_%=-DFIXMATH_%)
 INCLUDES += -I$(PKG_SOURCE_DIR)/libfixmath
 
 ifneq (,$(filter libfixmath-unittests,$(USEMODULE)))
-  INCLUDES += -I$(PKG_SOURCE_DIR)/unittests
+  INCLUDES += -I$(PKG_SOURCE_DIR)
+  INCLUDES += -I$(PKG_SOURCE_DIR)/tests
 endif
diff --git a/tests/pkg_libfixmath_unittests/Makefile b/tests/pkg_libfixmath_unittests/Makefile
index 0472e5e23881..dfbe881e7a75 100644
--- a/tests/pkg_libfixmath_unittests/Makefile
+++ b/tests/pkg_libfixmath_unittests/Makefile
@@ -7,6 +7,11 @@ ifneq (,$(filter native,$(BOARD)))
 endif
 
 USEMODULE += printf_float
+USEMODULE += test_utils_main_exit_cb
+
+CFLAGS += -Wno-error=strict-prototypes
+CFLAGS += -Wno-error=old-style-definition
+CFLAGS += -Wno-error=format
 
 TEST_ON_CI_WHITELIST += native
 
diff --git a/tests/pkg_libfixmath_unittests/main.c b/tests/pkg_libfixmath_unittests/main.c
index d401275d7fce..032e70d1322d 100644
--- a/tests/pkg_libfixmath_unittests/main.c
+++ b/tests/pkg_libfixmath_unittests/main.c
@@ -29,17 +29,12 @@
  */
 
 #include <stdio.h>
-#include "libfixmath-unittests.h"
 
-#define RUN(x)  if (x() != 0) { return 1; }
-
-int main(void)
+void test_utils_main_exit_cb(int res)
 {
-    RUN(fix16_exp_unittests);
-    RUN(fix16_macros_unittests);
-    RUN(fix16_str_unittests);
-    RUN(fix16_unittests);
-
-    puts("SUCCESS");
-    return 0;
+    if (res) {
+        puts("FAILED");
+    } else {
+        puts("SUCCESS");
+    }
 }